Open Interest Indicator | How to Catch Short covering in Option

Indicator Name : Open Interest

Add : 20 Ema on this

Have Both Call and Put ATM options in single chart. Have 20 Ema selected on Price Chart. Add Open Interest Indicator. If Open interest line is moving up with price then option buying is happening. If price is going up abv 20 Ema and Open Interest is below 20 Ema , then short covering has started . 

This will also apply for stocks option. For stock and index future also same.

Time Frame : 3 mins and Above. 

Thanks