How to bind variable as parameter in Work Order DFF

Summary:How to bind variable as parameter in Work Order DFF?

Content (required): Below is the requirement

We need to create a table based value set DFF where the values will be fetched from Standard Lookup Table and matched to WO DFF. There are 3 DFFS (ATR 1, ATR2 and ATR3). ATR 1 and ATR2 are Text DFF. ATR3 is a table based DFF which matches the combinations of ATR1 and ATR2 and match it with description column and Tag column in StandardLookups table to fetch the Lookup Code.

Problem is we need to give the parameter as WO ID in the where clause the fetch the ATR1 and ATR2. I tried with different Queries bt its giving error.