Dear Simon,<br> Thanks for the response.  I would appreciate if you could provide the syntax.  I am not very familiar with strings.filter(). Example let's assume the keyword field is called Checklist. currently it contain (Application  Biodata Transfer_form payment)  and the receptionist have received Payment. So the arithmetic expression should remove payment and checklist should contain (Application  Biodata transfer_form)<br> <br> BR<br> <br> Jagan