diff --git a/pom.xml b/pom.xml
index f98703f60..09a183d60 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>edu.stanford.protege</groupId>
     <artifactId>webprotege-gwt-ui</artifactId>
-    <version>6.0.18-WHO</version>
+    <version>7.0.0-WHO</version>
     <packaging>pom</packaging>
 
     <properties>
diff --git a/webprotege-gwt-ui-client/pom.xml b/webprotege-gwt-ui-client/pom.xml
index ca8788fbd..994c0751b 100644
--- a/webprotege-gwt-ui-client/pom.xml
+++ b/webprotege-gwt-ui-client/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>edu.stanford.protege</groupId>
         <artifactId>webprotege-gwt-ui</artifactId>
-        <version>6.0.18-WHO</version>
+        <version>7.0.0-WHO</version>
     </parent>
 
     <artifactId>webprotege-gwt-ui-client</artifactId>
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/PostCoordinationPortletPresenter.java b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/PostCoordinationPortletPresenter.java
index 02ff047c5..3ccc46414 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/PostCoordinationPortletPresenter.java
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/PostCoordinationPortletPresenter.java
@@ -1,6 +1,5 @@
 package edu.stanford.bmir.protege.web.client.postcoordination;
 
-import com.google.web.bindery.event.shared.EventBus;
 import edu.stanford.bmir.protege.web.client.dispatch.DispatchServiceManager;
 import edu.stanford.bmir.protege.web.client.lang.DisplayNameRenderer;
 import edu.stanford.bmir.protege.web.client.library.dlg.DialogButton;
@@ -34,7 +33,6 @@ public class PostCoordinationPortletPresenter extends AbstractWebProtegePortletP
     private final Logger logger = Logger.getLogger("PostCoordinationPortletPresenter");
 
     private final DispatchServiceManager dispatch;
-    private final EventBus eventBus;
 
     private final LoggedInUserManager loggedInUserManager;
     private final MessageBox messageBox;
@@ -56,13 +54,14 @@ public class PostCoordinationPortletPresenter extends AbstractWebProtegePortletP
 
     private final ScaleValueSelectionViewPresenter scaleSelectionPresenter;
 
+    private WebProtegeEventBus eventBus;
+
     @Inject
     public PostCoordinationPortletPresenter(@Nonnull SelectionModel selectionModel,
                                             @Nonnull ProjectId projectId,
                                             @Nonnull DisplayNameRenderer displayNameRenderer,
                                             @Nonnull DispatchServiceManager dispatch,
                                             @Nonnull PostCoordinationPortletView view,
-                                            @Nonnull EventBus eventBus,
                                             @Nonnull MessageBox messageBox,
                                             @Nonnull LoggedInUserManager loggedInUserManager,
                                             ModalManager modalManager,
@@ -71,7 +70,6 @@ public PostCoordinationPortletPresenter(@Nonnull SelectionModel selectionModel,
         this.view = view;
         this.messageBox = messageBox;
         this.dispatch = dispatch;
-        this.eventBus = eventBus;
         this.loggedInUserManager = loggedInUserManager;
         this.modalManager = modalManager;
         this.scaleSelectionPresenter = scaleSelectionPresenter;
@@ -80,6 +78,7 @@ public PostCoordinationPortletPresenter(@Nonnull SelectionModel selectionModel,
 
     @Override
     public void startPortlet(PortletUi portletUi, WebProtegeEventBus eventBus) {
+        this.eventBus = eventBus;
         portletUi.setWidget(view.asWidget());
         setDisplaySelectedEntityNameAsSubtitle(true);
 
@@ -312,7 +311,7 @@ private void addScaleValueCardPresenter(String axisIri) {
                 PostcoordinationScaleValue.create(axisIri, currentAxisLabels.getScaleLabel(), existingScaleValueForAxis, genericScale1)
         );
         scaleValueCardPresenters.put(axisIri, newPresenter);
-        newPresenter.start(editMode);
+        newPresenter.start(eventBus, editMode);
         updateScaleValueCards();
     }
 
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/ScaleValueCardPresenter.java b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/ScaleValueCardPresenter.java
index 0fe2e6175..ce291a6b2 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/ScaleValueCardPresenter.java
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/ScaleValueCardPresenter.java
@@ -1,14 +1,18 @@
 package edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard;
 
 import edu.stanford.bmir.protege.web.client.dispatch.DispatchServiceManager;
+import edu.stanford.bmir.protege.web.client.hierarchy.ClassHierarchyDescriptor;
 import edu.stanford.bmir.protege.web.client.library.dlg.DialogButton;
 import edu.stanford.bmir.protege.web.client.library.modal.*;
 import edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.scaleValueSelectionModal.ScaleValueSelectionViewPresenter;
 import edu.stanford.bmir.protege.web.shared.entity.GetRenderedOwlEntitiesAction;
+import edu.stanford.bmir.protege.web.shared.event.WebProtegeEventBus;
 import edu.stanford.bmir.protege.web.shared.postcoordination.*;
 import edu.stanford.bmir.protege.web.shared.project.ProjectId;
+import org.semanticweb.owlapi.model.*;
+import uk.ac.manchester.cs.owl.owlapi.OWLClassImpl;
 
-import java.util.Set;
+import java.util.*;
 import java.util.stream.*;
 
 public class ScaleValueCardPresenter {
@@ -26,6 +30,8 @@ public class ScaleValueCardPresenter {
 
     private ScaleValueSelectionViewPresenter scaleValueSelectionPresenter;
 
+    private WebProtegeEventBus eventBus;
+
 
     public ScaleValueCardPresenter(DispatchServiceManager dispatchServiceManager,
                                    ProjectId projectId,
@@ -103,7 +109,8 @@ public void setEditMode(boolean editMode) {
         view.setEditMode(editMode);
     }
 
-    public void start(boolean isEditMode) {
+    public void start(WebProtegeEventBus eventBus, boolean isEditMode) {
+        this.eventBus = eventBus;
         this.view = new ScaleValueCardViewImpl();
         bindView();
         initTable();
@@ -120,13 +127,12 @@ public void showModalForSelection() {
             closer.closeModal();
             selectChosenEntity();
         });
-        scaleValueSelectionPresenter.setAllowMultiValue(ScaleAllowMultiValue.fromString(scaleValue.getGenericScale().getAllowMultiValue()));
-        scaleValueSelectionPresenter.setScaleTopClass(scaleValue.getGenericScale().getGenericPostcoordinationScaleTopClass());
-        scaleValueSelectionPresenter.start();
+        Set<OWLClass> roots = new HashSet<>(Collections.singletonList(new OWLClassImpl(IRI.create(scaleValue.getGenericScale().getGenericPostcoordinationScaleTopClass()))));
+        scaleValueSelectionPresenter.start(eventBus, ClassHierarchyDescriptor.get(roots));
         modalManager.showModal(modalPresenter);
     }
 
     private void selectChosenEntity() {
-        scaleValueSelectionPresenter.getSelections().forEach(scaleValue -> addRow(scaleValue, scaleValue));
+        scaleValueSelectionPresenter.getSelection().ifPresent(owlEntity -> addRow(owlEntity.getEntity().toStringID(), owlEntity.getBrowserText()));
     }
 }
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionView.java b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionView.java
index 478fbaab4..746814f0d 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionView.java
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionView.java
@@ -1,16 +1,12 @@
 package edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.scaleValueSelectionModal;
 
-import com.google.gwt.user.client.ui.IsWidget;
-import edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.ScaleAllowMultiValue;
+import com.google.gwt.user.client.ui.*;
 import edu.stanford.bmir.protege.web.client.progress.HasBusy;
 
-import java.util.List;
+import javax.annotation.Nonnull;
 
 public interface ScaleValueSelectionView extends IsWidget, HasBusy {
 
-    void clear();
-
-    List<String> getText();
-
-    void setTopClass(String scaleTopClass);
+    @Nonnull
+    AcceptsOneWidget getHierarchyContainer();
 }
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.java b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.java
index 5480e7967..566dbcccc 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.java
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.java
@@ -4,24 +4,20 @@
 import com.google.gwt.uibinder.client.*;
 import com.google.gwt.user.client.ui.*;
 import edu.stanford.bmir.protege.web.client.Messages;
-import edu.stanford.bmir.protege.web.client.library.text.ExpandingTextBoxImpl;
-import edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.ScaleAllowMultiValue;
 
 import javax.annotation.Nonnull;
 import javax.inject.Inject;
-import java.util.*;
 import java.util.logging.Logger;
-import java.util.stream.Collectors;
 
 public class ScaleValueSelectionViewImpl extends Composite implements ScaleValueSelectionView {
 
-    @UiField
-    ExpandingTextBoxImpl scaleValueSelection;
-
     private final Messages messages;
 
     private static final Logger logger = Logger.getLogger(ScaleValueSelectionViewImpl.class.getName());
 
+    @UiField
+    public SimplePanel hierarchyContainer;
+
     interface ScaleValueSelectionModalImplUiBinder extends UiBinder<HTMLPanel, ScaleValueSelectionViewImpl> {
     }
 
@@ -45,19 +41,9 @@ protected void onAttach() {
         super.onAttach();
     }
 
-
-    @Override
-    public void clear() {
-        scaleValueSelection.setText("");
-    }
-
-    @Override
-    public List<String> getText() {
-        return Arrays.stream(scaleValueSelection.getText().trim().split("\n")).collect(Collectors.toList());
-    }
-
+    @Nonnull
     @Override
-    public void setTopClass(String scaleTopClass) {
-
+    public AcceptsOneWidget getHierarchyContainer() {
+        return hierarchyContainer;
     }
 }
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.ui.xml b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.ui.xml
index e68a2f3cc..f68ae1f20 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.ui.xml
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewImpl.ui.xml
@@ -1,13 +1,12 @@
 <ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder'
-             xmlns:text="urn:import:edu.stanford.bmir.protege.web.client.library.text"
              xmlns:g='urn:import:com.google.gwt.user.client.ui'>
 
 <ui:with field="wp" type="edu.stanford.bmir.protege.web.resources.WebProtegeClientBundle"/>
 
 <ui:style>
     .main-panel-style {
-        width: 800px;
-        max-width: 800px;
+        width: 500px;
+        max-width: 500px;
         box-sizing: border-box;
         overflow: hidden;
     }
@@ -31,9 +30,7 @@
         <tr>
             <td valign="top">
                 <g:HTMLPanel addStyleNames="{style.message-block}">
-                    <text:ExpandingTextBoxImpl ui:field="scaleValueSelection"
-                                               mode="MULTI_LINE"
-                                               anchorVisible="false"/>
+                    <g:SimplePanel ui:field="hierarchyContainer"/>
                 </g:HTMLPanel>
             </td>
         </tr>
diff --git a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewPresenter.java b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewPresenter.java
index 37791b33d..bdd08075e 100644
--- a/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewPresenter.java
+++ b/webprotege-gwt-ui-client/src/main/java/edu/stanford/bmir/protege/web/client/postcoordination/scaleValuesCard/scaleValueSelectionModal/ScaleValueSelectionViewPresenter.java
@@ -1,26 +1,33 @@
 package edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.scaleValueSelectionModal;
 
-import edu.stanford.bmir.protege.web.client.library.modal.ModalManager;
-import edu.stanford.bmir.protege.web.client.postcoordination.scaleValuesCard.ScaleAllowMultiValue;
+import edu.stanford.bmir.protege.web.client.hierarchy.*;
+import edu.stanford.bmir.protege.web.shared.entity.EntityNode;
+import edu.stanford.bmir.protege.web.shared.event.WebProtegeEventBus;
 
 import javax.annotation.Nonnull;
 import javax.inject.Inject;
-import java.util.List;
+import java.util.Optional;
 
 public class ScaleValueSelectionViewPresenter {
 
     private ScaleValueSelectionView view;
-    private ScaleAllowMultiValue scaleAllowMultiValue;
-    private String scaleTopClass;
 
     @Nonnull
-    private final ModalManager modalManager;
+    private final HierarchyPopupView hierarchyView;
+
+    @Nonnull
+    private final EntityHierarchyModel model;
+
+    private Optional<EntityNode> selectedEntity = Optional.empty();
+
 
     @Inject
     public ScaleValueSelectionViewPresenter(ScaleValueSelectionView view,
-                                            @Nonnull ModalManager modalManager) {
+                                            @Nonnull HierarchyPopupView hierarchyView,
+                                            @Nonnull EntityHierarchyModel model) {
         this.view = view;
-        this.modalManager = modalManager;
+        this.hierarchyView = hierarchyView;
+        this.model = model;
     }
 
     @Nonnull
@@ -28,19 +35,23 @@ public ScaleValueSelectionView getView() {
         return view;
     }
 
-    public void start() {
-    }
+    public void start(WebProtegeEventBus eventBus, HierarchyDescriptor hierarchyDescriptor) {
+        this.clean();
+        model.start(eventBus,
+                hierarchyDescriptor);
+        hierarchyView.setModel(model);
+        hierarchyView.setSelectionChangedHandler(
+                entityNode -> selectedEntity = Optional.of(entityNode)
+        );
+        this.view.getHierarchyContainer().setWidget(hierarchyView);
 
-    public List<String> getSelections() {
-        return view.getText();
     }
 
-    public void setAllowMultiValue(ScaleAllowMultiValue scaleAllowMultiValue) {
-        this.scaleAllowMultiValue = scaleAllowMultiValue;
+    public Optional<EntityNode> getSelection() {
+        return selectedEntity;
     }
 
-    public void setScaleTopClass(String scaleTopClass) {
-        this.scaleTopClass = scaleTopClass;
-        this.view.setTopClass(scaleTopClass);
+    private void clean() {
+        this.selectedEntity = Optional.empty();
     }
 }
diff --git a/webprotege-gwt-ui-server-core/pom.xml b/webprotege-gwt-ui-server-core/pom.xml
index 0a3f7c1fa..d15c5d584 100644
--- a/webprotege-gwt-ui-server-core/pom.xml
+++ b/webprotege-gwt-ui-server-core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>webprotege-gwt-ui</artifactId>
         <groupId>edu.stanford.protege</groupId>
-        <version>6.0.18-WHO</version>
+        <version>7.0.0-WHO</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webprotege-gwt-ui-server/pom.xml b/webprotege-gwt-ui-server/pom.xml
index df5d3d97a..3259e0f8e 100644
--- a/webprotege-gwt-ui-server/pom.xml
+++ b/webprotege-gwt-ui-server/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>edu.stanford.protege</groupId>
         <artifactId>webprotege-gwt-ui</artifactId>
-        <version>6.0.18-WHO</version>
+        <version>7.0.0-WHO</version>
     </parent>
 
     <artifactId>webprotege-gwt-ui-server</artifactId>
diff --git a/webprotege-gwt-ui-shared-core/pom.xml b/webprotege-gwt-ui-shared-core/pom.xml
index abd93b329..df9f07666 100644
--- a/webprotege-gwt-ui-shared-core/pom.xml
+++ b/webprotege-gwt-ui-shared-core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>webprotege-gwt-ui</artifactId>
         <groupId>edu.stanford.protege</groupId>
-        <version>6.0.18-WHO</version>
+        <version>7.0.0-WHO</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webprotege-gwt-ui-shared/pom.xml b/webprotege-gwt-ui-shared/pom.xml
index d666b1ad2..55c031758 100644
--- a/webprotege-gwt-ui-shared/pom.xml
+++ b/webprotege-gwt-ui-shared/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>edu.stanford.protege</groupId>
         <artifactId>webprotege-gwt-ui</artifactId>
-        <version>6.0.18-WHO</version>
+        <version>7.0.0-WHO</version>
     </parent>
 
     <artifactId>webprotege-gwt-ui-shared</artifactId>