First let me preface this by saying that although I am not totally unfamiliar with Filemaker as a user I am very green when it comes to programming. Much of my Excel knowledge I have for formulas seems to transfer over nicely to this but this one has me totally stumped and I cannot find a reasonable solution anywhere online (unless of course I am asking the question wrong).

If ( THICKNESS1 < 3 & WIDTH1 = 4 & GRADE1 = "DR" ; BRDFT1 ; 0 )

In the above formula, "THICKNESS1" & "WIDTH1" are both number fields that are a result of indexed lookups which, after some side testing, I have deemed not to be the culprit in my "0" result of this formula above.

"BRDFT1" on the other hand is an item in a value list called "GRADE".

In the above image...based on my formula...the thickness on line 1 is < 3 therefore true, the width on line 1 = 4 therefore true and the grade of "DR" is showing on line 1...the result should be the 5.33 from the last cell on line 1 but instead I get 0.

Hopefully this makes sense to someone cuz I am at my wits end. I am assuming it has something to do with the fact that the DR is from a value list and not a directly keyed or indexed field but I can only speculate.

Thanks in advance for any assistance you guys can offer. My guess is this is an easy response for someone out there.

& is not a comparison operator in filemaker. It is a text operator that performs concatentation

http://www.filemaker.com/help/12/fmp/html/create_db.8.44.html

You need to use the logical operator AND