ThinkorSwim TA and More

[Caoi]

Hi New to writing TOS
How could i write a simple code for this :

3BR= 3 bar reversal. It’s a candlestick pattern. At a trading top, it will look like this:
Bar #1 is an up bar.
Bar #2 is a down bar, and the high of Bar #2 is higher than the close of Bar #1.
Bar #3 is a down bar, and the close of Bar #3 is lower than the open of Bar #1.
The inverse occurs at trading bottoms.

Any help would be greatly appreciated
Kevin