diff --git a/packages/Sandblocks-Babylonian/SBStNumber.extension.st b/packages/Sandblocks-Babylonian/SBStNumber.extension.st
new file mode 100644
index 00000000..819b0e0c
--- /dev/null
+++ b/packages/Sandblocks-Babylonian/SBStNumber.extension.st
@@ -0,0 +1,42 @@
+Extension { #name : #SBStNumber }
+
+{ #category : #'*Sandblocks-Babylonian' }
+SBStNumber >> wrapInVariantCoveringRange [
+	<action>
+	
+	| rangeString range |
+	rangeString := UIManager default
+		request: 'Enter range of numbers'
+		initialAnswer: '1 to: 5'.
+	rangeString ifNil: [^ self].
+	
+	range := [Compiler evaluate: rangeString] on: Error do: [:ex | UIManager inform: 'Not a valid range'. ^ self].
+	range start > range stop ifTrue: [range := range stop to: range start. range := range reversed].
+	
+	self wrapInVariantGivenInterval: range.
+	
+	
+	
+]
+
+{ #category : #'*Sandblocks-Babylonian' }
+SBStNumber >> wrapInVariantGivenInterval: anInterval [
+
+	| variant |
+	variant := SBVariant new.
+	self sandblockEditor do:
+		(SBWrapCommand new
+			selectAfter: #block;
+			outer: variant;
+			inner: self;
+			wrap: [:outer :inner | variant 
+				named: anInterval asString
+				alternatives: (anInterval collect: [:aNumber | 
+					SBNamedBlock block: (SBStBlockBody new 
+						statements: {(inner veryDeepCopy value: aNumber)}) 
+						named: aNumber asString])
+				activeIndex: 1])
+	
+	
+	
+]