Problem in Grouping the ALV output

Hi Experts

I want to group the ALV Grid output Division wise

for that I have written following code

wa_sort-spos = '1'.

wa_sort-fieldname = 'REGIOAREA' .

wa_sort-tabname = 'IT_FINAL' .

wa_sort-up = 'X'.

wa_sort-group = '*'.

wa_sort-subtot = 'X'.

APPEND wa_sort TO it_sort .

CLEAR wa_sort.

I m passing it_sort table in the FM for sorting but output is not getting grouped can you please

tell me what is the problem ?

How to group the report ?

Helpful answers will be highly rewarded

Regards

Bikas