Peter
I'm working from memory here, so it may not be quite correct...
You cannot directly refer to a subform from a subform. You first have to go back up the tree to the parent form and then back down to the second subform - something like this:
Me.Parent.[Second SubForm COntrol Name].Form.cmbControlToUpdate.Requery
A simpler solution would be to assume that things have changed and requery the second subform whenever the user clicks on its tab.
Brian Skelton
Braxis Computer Services Ltd.
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