moveToPositionAsync().join() not working as expected.

[dskuma]

Hello everyone, I am trying to fly the copter in conical helix patter as attached in the picture below.

conical helix form
I have used the parametric equations to derive the x, y, z coordinates of the spline and I am using the moveToPositionAsync().join() to fly the pattern. Simply inputting the x, y, and z coordinates seems to work fine, however, I want the copter to face the center, much similar to the orbit.py script. I adapted the camera angle from the orbit script and when I use moveToPositionAsync().join() with yaw_mode(False,camera_angle) the script seems to just ignore the command. what am I doing wrong?