Is my code in abap objects correct?

[Former Member]

Am new to abap objects. Is my coding correct? Can I use "IF GO_GRID3 IS NOT INITIAL".

MODULE user_command_0102 INPUT.

  CASE ok_code.
    WHEN 'RETURN'(042).     

     CALL METHOD go_grid3->free.
      CALL METHOD go_custom_container3->free.
      CLEAR go_custom_container3.     

             LEAVE TO SCREEN 0.

    WHEN 'OVERVIEW'.     

         IF GO_GRID3 IS NOT INITIAL.  " new code b's of dump - is it correct?
            CALL METHOD go_grid3->free.
            CALL METHOD go_custom_container3->free.
            CLEAR go_custom_container3.    

          ENDIF.                " new code b's of dump
      CALL METHOD go_grid1->free.
      CALL METHOD go_custom_container1->free.
      CLEAR go_custom_container1.

===================================

Basically, from overview screen (it is dumping)

In debugging, I have values like  below:

GO_GRID3                                                {O:INITIAL}

GO_CUSTOM_CONTAINER3                     {O:INITIAL}

GO_GRID1                                               {O:28*\CLASS=CL_GUI_ALV_GRID}

GO_CUSTOM_CONTAINER1                     {O:27*\CLASS=CL_GUI_CUSTOM_CONTAINER}

[hendrik_brandes]

Hello Sam,

you will have to use

IF go_grid3 is bound.

...

ENDIF.

Kind regards,

Hendrik