Call System::AutoCmd::GetParm to determine the value of positional parameter that was assigned using the << operator. The value is returned as a Variant object. Its underlying type can be obtained using the GetArgType method. 

The idx parameter is the index of the value in the System::AutoCmd::AutoCmd object’s parameter list, where 0 is the index of the first argument. Use the GetArgCount method to obtain an upper limit of possible values. 

System::AutoCmd::operator_streaming 

System::AutoCmd::GetArgCount 

System::AutoCmd::GetArgType 

System::Variant