I have a y/n text (ynGift) on a form.  There is another text box txtCost on
the same form.

Here's the logic I want to implement:

If the user "checks" the box, I want to set txtCost.Enabled = False;
If the user "unchecks" the box, I want to set txtCost.Enabled = True;

I'm not sure which ynGift event I should be keying on to invoke the logic:
OnClick?  AfterUpdate?  Other?

E.g.,  I'm not sure, when the Click event fires, does ynGift have the
"right" value?

Gary