[Closed] Annoying issue with when selection change call back

I’m having trouble getting a script to behave like I want it to. I have a function that replaces a face with some other geometry, and I would like to call it whenever a a face gets selected. I’m using a when selection callback, but since the face is being replaced, deleting the face triggers the callback. Also changing the face selection normally triggers the call back twice, once to set selection to #{} and again with new selection. the Script works how I would like it to IF ‘ctrl’ is being held down, but I would like to make it so the script would behave like this without having to hold the key down. Is there a better approach I should be using to run a function when face is selected?

lastSelection = undefined
    fn doStuff = (
    	if lastSelection == undefined  or ((((polyop.getfaceselection $) as array).count != (lastSelection as array).count ) /*and ((lastSelection as array).count != 0 )*/ )then (
    		if ((polyop.getfaceselection $) as array).count > 0 then (
    			attachToPoly = true
    -- 			useNormals = keyboard.shiftPressed --keyboard.altPressed --cant use alt or shift as modifiers because they are also selection modifiers
    -- 			useInset= keyboard.shiftPressed
    		for f in (polyop.getfaceselection $) do (
    			select stampObject
    			maxOps.cloneNodes $ cloneType:#copy newNodes:&nnl
    			awesomeOps.MoveBBoxToFace StampBaseObject nnl[1] f SortType:#screen --useVertexNormals:useNormals --inset:useInset --height: smoothGroup: flip: 
    			if attachToPoly == true then (
    				polyop.attach StampBaseObject nnl[1]
    				polyop.detachFaces StampBaseObject (polyop.getfaceselection $) delete:true
    				StampBaseObject.EditablePoly.delete #Face
    				--StampBaseObject.weldThreshold = 0.05
    				polyop.weldVertsByThreshold StampBaseObject #{ 1.. (StampBaseObject.numVerts) }
    			)
    			select StampBaseObject
    		)
    		)
    		lastSelection = (polyop.getfaceselection $)
    	) else (
    -- 	print "BREAK!"
    	deleteAllChangeHandlers id:#test
    	)
    	
    	)