To override, nullify, or add parameters to a procedure OUTPUT JCL or DD statement, code in the name field of the overriding OUTPUT JCL or DD statement the name of the procedure step containing the overridden statement, followed by a period, followed by the name of the procedure OUTPUT JCL statement or the ddname of the procedure DD statement.

//pstepname.name   OUTPUT parameters
   //pstepname.ddname DD     parameters