>Disregard the clue about the problem going away when you use a ControlSource with "m." preceding the variable name. The problem still happens irregardless. I just found out. Sorry if I led you astray.

Hi Steve,

Not the answer on your question, but as was mentioned in today's nice thread about light blub, there would be messages about spelling or grammar: :)

There is no such word as "IRREGARDLESS"

Funny, that English is not my native language...

Sorry for unrelated observation...

Cheer :)