Advance Search Custom Field on Quote Item Windows

Hello,

I'm trying to insert an Advance Search field in a Quote items window (QuoteFreeTextItemSummanry), but when click on it, there isn't any action. Also, if I going to add same field on Quote Summary window, it works fine.

Maybe is not possible to add new SSA on quote items?

On navigator debug, I can see this:

Thanks on advance...

David Coll