Binance Reverse Trade Code

I already have my script. i just need a reverse code added to my script when a certain condition is met. i need a reverse trade script added to my code to counter false signals. 

Most importantly, i really need this done within 12hrs. if you can do it within this time, do contact me. if you cannot, please dont.

if you look at the attach file you can see where my problem is. it enters the trade to sell when conditions are met..but then it went up instead of continuing downwards. so thats why i need the reverse code. to enter when the ema 8 and ema 21 cross again and go up.

LOOK AT THE PICTURE TO UNDERSTAND BETTER WHAT I MEANT.