Control not going in module

Question

hi to all experts,
my requirement is to create assign an authorization object for a ztable. so what i have done in the screen of table maintenance generator i have created a module for a field which requires the authorization,But the control never goes in . what might be the problem.
PROCESS BEFORE OUTPUT.
MODULE LISTE_INITIALISIEREN.
LOOP AT EXTRACT WITH CONTROL
  TCTRL_ZMPRU015 CURSOR NEXTLINE.
   MODULE LISTE_SHOW_LISTE.
ENDLOOP.
PROCESS AFTER INPUT.
MODULE LISTE_EXIT_COMMAND AT EXIT-COMMAND.
MODULE LISTE_BEFORE_LOOP.
LOOP AT EXTRACT.
     my added code
        FIELD ZMPRU015-PLANT_GROUP.
           MODULE CHECK_AUTHORIZATION.     
      MODULE LISTE_INIT_WORKAREA.
  CHAIN.
    FIELD ZMPRU015-PLANT_GROUP .
    FIELD ZMPRU015-ZSEQ .
    FIELD ZMPRU015-KOSTL_FROM .
    FIELD ZMPRU015-KOSTL_TO .
    FIELD ZMPRU015-GLFROM .
    FIELD ZMPRU015-GLTO .
    MODULE SET_UPDATE_FLAG ON CHAIN-REQUEST.
   ENDCHAIN.
   FIELD VIM_MARKED MODULE LISTE_MARK_CHECKBOX.
   CHAIN.
    FIELD ZMPRU015-PLANT_GROUP .
    FIELD ZMPRU015-ZSEQ .
    MODULE LISTE_UPDATE_LISTE.
   ENDCHAIN.
ENDLOOP.
MODULE LISTE_AFTER_LOOP.

Answer 1

Your code should b placed at the follwoing place.. Then only it will be triggered...
CHAIN.
  Standard code
   MODULE SET_UPDATE_FLAG ON CHAIN-REQUEST.
      Your Code
   ENDCHAIN.