You might try turning that field into a string since even though it has numbers in it, it is a string (zip codes are not calculated.)

The problem with vbscript is that it is typeless until you start pulling data, and then it makes a best guess - unless you type it.

To correct this, pull the data in that field using "CStr()". This will turn that field into a string value, and the "-" won't be read as a minus sign.

HTH

mmcdonal