Call System::AutoCmd::ClearName to disassociate the System::AutoCmd::AutoCmd object from the Automation interface method it represents. System::AutoCmd::ClearName replaces the method name with an empty string, but does not free any parameter values that have been assigned. After a call to System::AutoCmd::ClearName, the System::AutoCmd::AutoCmd object can’t be executed until a new method name is assigned using the SetName method. 

System::AutoCmd::Clear 

System::AutoCmd::ClearArgs