Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
The current value is not set in the source properties, but rather in the source excitations. Right click on "Field Overlays" in the left hand menu and select 'Edit Sources..". You should be able to set the value there.