LinkedButton on a matrix of system form

Hi all,

is it possible to add a LinkedButton over a column of a Matrix on a System form?

1)I've added a UDF Field on POR1 table (purchase orders lines).

2)The system automatically bind the matrix of purchase order form with an EditText

3)That's ok but I want to attach a linked button to my edit text.

any help would be appreciated.

Thanks in advance

D.