[Closed] Undo question UnwrapUVW

I am trying to get this line to undo

$.Unwrap_UVW.stitchVerts true 0.0

it will not show up, I have even put it in a undo label

on btnStitch0 pressed do with undo label:“Foo” on
(
$.Unwrap_UVW.stitchVerts true 0.0
)

Still with no undo.

The listener when doing a non dialog stitch spits out something that I can use (but no bias setting) but when I use the dialog it spits out nothing to the listener but is still undoable…

Anybody have any ideas on how to get Stitch with a fixed bias setting to undo if possible?

Thanks.