20 and 80 stoch level

 

Hi, i got a problem on how to code area for 20 and 80 level on stoch. anyone can help?

i want to code :

AREA1: >80

AREA2: 20<AREA2<80

AREA3:<20

then , all activities buy( main>signal) and sell( signal>main) are within AREA2...please help..many thanks.

Reason: