Trying to use the If field to see if bookmark contains a string of text

I am looking for a way to use field codes to see if a Text Form Field contains a specific string, and if so, display some text.

Specifically my Text Form Field is to gather the mailing address. If the mailing address is a PO Box, then I need to display a warning to also collect the physical address.

So, I have { If {MailingAddr} = "PO Box" "Please also get the physical address" }

But, the {MailingAddr} field will contain more than just "PO Box", so I need to add some wild cards ("PO Box*") or use some sort of other evaluation to do a partial match.

I hope you'll be able to find the solution at Word MVP's site.

Word does not have a function to extract parts of a field, nor does it have a "contains" comparison available to the IF function.

You'll have to redesign your approach.