How to Grey out cost center column in me22n screen(Account assignment tab)

Question

Hi All,
I have tried many ways to do grey  out cost center column in account assignment tab of ME22N.
i have created implementation for this class and method. 
Class:CL_TABLE_VIEW_MM_2
Method:PBO_TC_LINE
Below is the my code snippet.Kindly let me know any suggestions.
data:  l_tc type char100.
data:  l_tabix type i.
     l_tc = '(SAPLMEACCTVI)DYN_1000TC-COLS'.
FIELD-SYMBOLS:<fs_tcdata> type any TABLE,
                <fs_wa> type any ,
                <fs_lwa> type any,
                <fs_screen> type any,
                <fs_input> type any,
                <fs_active> type any,
                <fs_output> type any.
*data:fs_wa type SCXTAB_COLUMN_IT.
   ASSIGN (l_tc) TO <fs_tcdata>.
   LOOP AT <fs_tcdata> ASSIGNING <fs_wa>.
      l_tabix = sy-tabix.
    ASSIGN COMPONENT 'INVISIBLE' OF STRUCTURE <fs_wa> TO <fs_lwa>.
       ASSIGN COMPONENT 'SCREEN-NAME' OF STRUCTURE <fs_wa> TO <fs_screen>.
       ASSIGN COMPONENT 'SCREEN-INPUT' OF STRUCTURE <fs_wa> TO <fs_input>.
       ASSIGN COMPONENT 'SCREEN-ACTIVE' OF STRUCTURE <fs_wa> TO <fs_active>.
       ASSIGN COMPONENT 'SCREEN-OUTPUT' OF STRUCTURE <fs_wa> TO <fs_output>.
       IF <fs_lwa> = space.
         CASE <fs_screen>.
            WHEN 'MEACCT1000-KOSTL'.
             <fs_input>     = 0.
             ENDCASE.
             endif.
             ENDLOOP.
Regards,
Hiriyappa

Answer 1

As I can't see any complicated scenario in your requirement. So I suggest you can achieve this by simple standard configuration.
Go to OME9, double click on the Account assignment category and make the field as Display.
Then check in your PO.
But I doubt, your requirement can not be simple like that.
So either you didn't know the settings or your requirement is different or you are just trying to learn that can it be possible via coding.
Let us know the appropriate reason for set it as display.