Schedule 112A ITR2

For LTCG on listed shares where STT is paid schedule 112A is to be filled. On save error is shown saying fill up mkt value as on Jan. 31st 2018. But if the shares are purchased after 1st Feb 2018, then this 31st jan value is not applicable to compute tax liability so should one put this market price as 0 to avoid wrong computation of liability?