undo setUserProp not working

[morten_bohne]

I'm having some problems with undoing setUserProp in max2017 (after changing pymxsExtend.py as mentioned here):

import pymxs
rt = pymxs.runtime
mybox = rt.box()
with pymxs.undo(True, "setUserProp on box"):
	rt.setUserProp(mybox, "userProp", 5)

The value gets set, but no undo is registered

I'm getting the same result in maxscript:

mybox = box()
undo "setUserProp on box" on
	(
 mybox "userProp" 5
	)

and just to test that undo works:

mybox = box()
undo "Move box" on
	(	
		mybox.pos = [10,0,0]
	)

 any ideas on how to get around this, or maybe someone has an estimate if it will be fixed in future versions? (@drew_avis mentioned in an earlier post that some bugs with undo should be fixed in 2018?)

[drew_avis]

Hi, thanks for posting this.  I tested in 2018, and undo does not capture setting user properties in MAXScript or Python.  You also cannot undo setting node user properties in the UI, so this action may just not be "undoable".  However, I've logged a defect in case this can be addressed.  

The defect that was fixed in 2018 is the typo in the pymxsExtend.py file that breaks undo.

Regards,

Drew

[denisT.MaxDoctor]

setUserProp and setUserPropBuffer have never been undoable  

[morten_bohne]

Hi, thanks for the replies. Sad to hear it still doesn't work in 2018, but good to know what to expect, so thanks for testing!

Great that you logged it, hope someone will have time to revisit it at some point!