Appreciate the clarification. One issue remaining is that changing the anchor (either to left or right) isn't always in sync with the latest skin position after the skin has been resized, variously jerking to random offsets when triggered, even with using the suggested variable for the anchor coordinate.This actually is the expected behavior, since when doing [!SetAnchor "0R" "0"] you're telling the skin to set the anchor at the 0 horizontal position ... but based on the top left corner of the skin - hence the skin movement, given that then the skin will be drawn to the right of your current left side of the skin. What you want is [!SetAnchor "#CURRENTCONFIGWIDTH#R" "0"], which will anchor the skin at its right edge horizontally. The context menu and other tools probably already do that, which is why they work as you expect.
Any thoughts on what is causing this discrepancy?
GIF:
Updated test case (here using mouse wheel for resizing for simplicity):
Statistics: Posted by Crest — Today, 9:10 am