If Bank Nifty crosses the 42850 level and sustains, we can see a good upside move towards 43300+ levels.
Currently, BN is trading in the triangle pattern. so we will wait for the breakout of the same. It may break upside or down side. then accordingly we'll make a trade. So wait & watch till gives a breakout on either side.
This is just my view, I may be wrong at any point in time. So please do your own study before any trade