aha that's right Tim,
But I think that the ADF <af:selectOneChoice> has another behavior then the plan Html ....
I am wondering why the values are not displayed correctly(put a certain selected item based on the value), When I convert my Long value to a String in the backing bean everything works will (put the converted Long in <af:selectOneChoice> value ).
Note : the selectItem Vector, the values in it are String . ----> the selectItem Vector is assigned to the <f:selectItems> value inside the <af:selectOneChoice>.
So I think this is the reason .
after all I don't have a solution but to do the conversion .
Best Regards.
And thanks all.
By the way Tim I like you truly signature .