Use the ICICommandSettings interface MinNumOfParamsMsg property to check or change the message sent when the wrong number of parameters is entered for a command. Refer to Command Settings Interface Properties for an illustration of how this and other ICICommandSettings can be accessed in the Administrator interface.
Signature:
HRESULT MinNumOfParamsMsg([out, retval] BSTR *pVal);
HRESULT MinNumOfParamsMsg([in] BSTR newVal);