first of all... i really appreciate ur help.
at strategy tester ( tick data) at my broker terminal. i saw the price reaching my sl level, am not sure if this sufficient to let the sl triggered n not jumping by a huge gap, as my broker claiming.
second thing i didnt see any gap in this case, while when u had a gap, normally u can see it in 1 min chart!
3rd thing is my broker sent me a chart of tick data from the liquidity provider, it showing a big gap ok, am not sure if they can manipulate that, n every candle means 1 second there, is it?! i mean is the tick data means 1 second time frame?!