Hi:
I try both of them but when i check in debugger both of them shows the
wrong value.

k = Combo2.Value
k = Forms!frmDHG!Combo2.Value

Thank You.

Huh? Works for me. What value were you expecting? Are you doing
something like saving one value and showing another? If you want the
one you're _showing_, that's usually the second, e.g.,

Forms!frmDHGIC!Combo2.Columns(1).Value

Maybe it would help if you posted the fields you're showing in your
combobox and how many and all that. Personally, I'm not psychic, so I
have no clue what you were expecting vs what you got.