Arithmatic in Tester transformer, syntax? wrong approach?

Hello...

 

 

So I trying to run a multi criteria test on some data.

 

 

the first 2 criteria and simple column = xxxxxxxxx

 

 

The third criteria is a arithmatic query that I use in arcgis.

 

 

Here is what I though might work:

 

 

=((@Value(SWIFT_LOAD)-@Value(Permit_License_Date))<30)

 

 

I am returning no passing values and I know for a fact due to my arcgis map that there a a few hundred returns.

 

 

Any ideas? Shpould I not use the tester to peform this part?

 

 

I am very new to FME (a few weeks)

 

 

Thanks!