The update query is triggered by a button in a form "Make a Payment". The query needs a value "CheckNo" which is displayed in the form. I identify the CheckNo field to the query as "Forms.[Make a Payment].CheckNo" . This works fine when starting the form directly, but when I make the form a subform to a Master Navigation form, it does not understand the construct and asks me to enter a value for "Forms.[Make a Payment].CheckNo". Apparently the form loses its identity when assigned to the Master form. It is now called a generic "NavigationSubform" in Design View. I tried that but no luck.
Any help please?