Notes/Domino 4 and 5 Forum

I have a problem. I need to ask with a Pick list collection method some document. If you can see my code, when vServidor variable contains a Server Path it works fine, but when vServidor variable contains nothing (""), because I try to use this application as local, then it doesn´t work. I suppose that it´s because it doesn´t can to find a Server. How can I do for local mode?. Can somebody help me please?. Here my code:

Set collection = UIworkspace.PickListCollection(1, False, _
vServidor,"SMS","vRolesSelect","Elegir vendedor", _
"Seleccione el vendedor al que levantará pedido",user)
Set doc = collection.GetFirstDocument()
If Not(doc Is Nothing) Then...

Thanks a lot. Regards.