Ad a simple new condition for entry trades

Hi , I need to add a new condition to my bot . The bot is already working correctly but I need a new condition to filter the trades better . The condition is that before a new pending order is going to be placed needs to check if the last bar (or the numbers of bars I select 1,2,3 etc) was bullish or bearish. Example : for a buy pending order will check all the conditions that are already implemented  and also the new condition . For a buy pending order will need to check if the last (3) bar was bearish before place the pending order . And for sell pending order viceversa.

Thanks