Creating an Undo palette

[Alejandro Tejada]

Hi All,

I am trying to create an Undo function
for one of my stacks.

Not sucessful at all. Everything seems so simple,
but it failed everytime.

The model that I am using for this task is the
"History palette" used in Photoshop:
http://livedocs.adobe.com/en_US/Photoshop/10.0/help.html?content=WSfd1234e1c4b69f30ea53e41001031ab64-7497.html

Now, I am asking for advice from all of you
that have created similar function for your
applications or stacks.

Thanks in advance!

Al