I want to make trading view indicator

I want an indicator that can tell me when price is below poc line in 3 timeframes.
Using this indicator by Lonesomethe wolf

And also when there is ema 20 and ema 50 cross. If ema 20 is above. Them up trend. If ema 50 is above. It means Downtrend

I want the indicator to give alert when price is below the poc number in both 15 min. 30 min and 1hr time frame. So all much he in same direction.