Select item from ref list depending on user

[Tritonos_Gruppe]

Hi

Would appreciate som help with an expression.

I have a REF list in a form and would like to have a name from that selected depending on the user logged in. I have a field called user that logs USERMAIL() as initial value. I also need to be able to change that name if form is filled on behalf of another user.

Have been trying to use SELECT without luck.

Any help is appreciated.