Application studio erp-combo-box filter append syntax in Part form

[R.Zimmer (Richard Zimmer)]

I am pulling my hair out trying to figure out the syntax for the filter append. I want to compare the current PartNum in the part form with the Key2 field in UD14.

The first screen shot below shows my syntax in filter append and this returns all part numbers in UD14.
The second screen shot below returns just the rows that I want for part number 22025 which is the current PartNum in the part form.

Please Help!!!
Thank You,
Richard

[R.Zimmer (Richard Zimmer)]

I finally got it to work by looking at other Epicor Combo boxes in the part form.