while filing itr 2 i filled a short term capital gain of rupees 21850 (sale of shares). i also depososted rupees 4200 as self assesment tax for 2014-15(fy).but when i uploaded the return whole amount of rupees 4200 is shown as refund. why did the sheet not calculate the tax on STCG (15%). PLEASE ADVISE. HOW CAN I REVISE THE SAID RETURN.