Copy parameter when making new object

In the Torque script reference, it says about object:

// In TorqueScript
            %var = new ObjectType(Name : CopySource, arg0, ..., argn) 
            {
            ....

But I'm having trouble figuring out how to use the "copySouce" parameter. Maybe it doesn't work with scriptObjects? I'm trying to do this:

$copiedObject = new simSet("name" : $sourceObject);

Doesn't seem to work :(