The Constrain Found Set part works regardless of the checkbox being checked or not.
That seems highly unlikely. It would be much more likely that the constrain isn't taking place even if the checkbox is clicked.
Is Photographer Omit Checkbox a field that has global storage specified?
Does the check box enter the text "yes" into the field when checked?
You may want to examine these scripted find examples to get a few more ideas: Scripted Find Examples
The "Photographer Omit Checkbox" was not specified as global. Now it works. Thanks!!!!!