hai mr.tools
i have an idea to update 3 trend bars valid signals, this can be used for pullback reversal trend bars and further to proceed to trend direction
for this needs to use body size ascending and descending sizes digits

filter arrow based on the below condition

down arrow
rule 1 bullish reversal
if 3 bullish bar body size is descending order
see snap
example for descending order

i+2 = 60
i+1 = 20
i = 10 - arrow down

UP ARROW
rule 1 bullish trend
if 3 bullish bar body size is ascending order
i+2 = 10
i+1 = 20
i = 60 - up down