The format of GSAM call is
CALL 'CBLTDLI' USING call-func, pcb-name, ioarea
CALL 'CBLTDLI' USING call-func, Ioarea
CALL 'CBLTDLI' USING pcb-name, Ioarea
CALL 'CBLTDLI' USING call-func, pdb-name pcb-name, Ioarea