>> Example, if I entered line 1, the grid showns line 1 (correct up to this point), and when I enter line 2, the grid only display line 2, and when I enter line 3, display only line 3 etc... What the correct behaviour is that it should display ALL line 1, line 2 and line 3 in the grid. <<

I assume that use are using a vfp table as the RecordOSurce for the grid and have a relation set between the parent table and the grids recordSource. Just a shot in the dark here (since I rarely implement my grids like this), but how are you adding the records? If you are doing an append blank, I think you will have this problem. Try using an INSERT INTO the child table with its foreign key value initialized to the value relational expression in the parent table.

Marcia