what code calls userform(5)? code in combo box?
if so then you might be able to use a little trick i have use in the past.
put a small text box on the main form, hidden so that the user can't see it.
then have the combo box code put it's id number in the hidden text box.
the code in commandbutton1 can then do a select case based on what id number
is in the hidden textbox.
there may be other ways but i have used this trick before and it works.