Problem : How to Remove/Delete or Hide CLOSE ( X ) Button in Model Dialog Box

Example : i have a screen 100 which is designed as Model Dialog box.I am displaying this screen from FM.
Ex code :
FUNCTION Fun_name.
CALL SCREEN 100 STARTING AT 10 01
ENDING AT 50 05.
ENDFUNCTION.
Screen 100:
PBO :
MODULE Status_100.
CODE in O01 Include:
MODULE status_100.
SET PF-STATUS 'Z100'.
ENDMODULE.
GUI Status Creation for model dialog box:
Double click on Z100 and select Model dialog box radio button from pop up screen by providing meaningful description.
After that Create your Application Tool bar Buttons as per the requirement, while creating buttons we have to provide function keys to the buttons.
If you provide function key as ENTER to any Function code of button , It will automatically enable CLOSE (X) button in Model Dialog box.
Solution :
1. SET PF-STATUS 'Z100'. EXCLUDING 'FC_CLOSE'.
Here 'FC_CLOSE' is the function code assigned to ENTER function key.
2.Remove the Function code Assigned to ENTER function key .

Example : i have a screen 100 which is designed as Model Dialog box.I am displaying this screen from FM.
Ex code :
FUNCTION Fun_name.
CALL SCREEN 100 STARTING AT 10 01
ENDING AT 50 05.
ENDFUNCTION.
Screen 100:
PBO :
MODULE Status_100.
CODE in O01 Include:
MODULE status_100.
SET PF-STATUS 'Z100'.
ENDMODULE.
GUI Status Creation for model dialog box:
Double click on Z100 and select Model dialog box radio button from pop up screen by providing meaningful description.
After that Create your Application Tool bar Buttons as per the requirement, while creating buttons we have to provide function keys to the buttons.
If you provide function key as ENTER to any Function code of button , It will automatically enable CLOSE (X) button in Model Dialog box.
Solution :
1. SET PF-STATUS 'Z100'. EXCLUDING 'FC_CLOSE'.
Here 'FC_CLOSE' is the function code assigned to ENTER function key.
2.Remove the Function code Assigned to ENTER function key .