How to catch Sys error or exception

I am a new TestComplete user and try out the following JScript code to see how Sys handles error:

function func001()

func001()

{

    try

    {

        if ( Sys.Process("cmd").Exists )

        {

            Log.Message( "Process exist ..." );

            Sys.Process("cmd").Close();

        }

        else

            Log.Message( "Process does not exist ..." );

    }

    catch ( e )

    {

        Log.Message("Exception thrown ...");

        Log.Error( e );

    }

}



Does Sys method call throw any exception on error ?  How do handle error in this case ?



Thank you! 



Alex.