I’m trying to record a macro that will resize the canvas from the center by adding a specified amount on each side.
 
Started Recording:
Used my shortcut for Resize Canvas
Clicked on Center for the Anchor
Clicked on the Lock to open it
Clicked in the right side of the width box and entered +1.5
Clicked in the right side of the height box and entered +1.5
Clicked on Resize
Stopped Recording:
Saved to Library
 
And when I click on it in the Library, nothing happens.  What am I doing wrong?  What am I not understanding about the process?