i try like this. pd 1s bid shows 6 or 6+, so i count at this stage that pd has only 4 hcp i have minimum game not possible so i have to convey minimum hand to pd , anything ibid at 3 level is forcing 1 round so bid at 3 level is canceled, i do not have 6 cards h so i will not bid 2h with bal i bid 1nt.