If I understand your problem correctly, then you have a cursor containing several columns, one of which is the displayed name and another is the numeric key value.

If you have a key value in a variable, then you don't need to try and find it yourself.

Set the ConrolSource = variable_name
Set the RowSourceType = 6 - Fields
Set the RowSource = cursor.displayfield, keyfield
Set the BoundColumn = 2
Set the ColumnCount = 1

This will bind to the combo the variable in such a way that setting the variable to the desired key value and refreshing the combo will display the correct name.

Jason