Month wise data

Hi Experts,

We had scenario to display monthly wise items. For this purpose, i had used

ON CHANGE WA_FINAL-PSTNG_DATE+04(02).

Total = Debit_total + Credit_total.

ENDON.

But this coding is not triggering.

Could please suggest what went wrong in my development?

Please provide suggestion to solve the issue.

Regards,

Bharat