if las bar upper side close then place buy stop order
las bar always
———————
previous inside or out side
so here is point
if las bar upper side close then place buy stop order
price goup
until last bar lower side close
sell trade vice versa
if last bar lower side close then
place sell stop oder untill upper side close
rinse and repeat
scalping book here
https://www.amazon.com/You-Forex-Scalping-Trade-Book-ebook/dp/B00IWEQ8FM/