CCI Overbought or OverSold dynamically drawn in the main chart

People find the value of the CCI using a formula like this...

CCI = (Typical Price - 20-period SMA of TP) / (0.015 x Mean Deviation)

My question is I would like to know how to write the mq4 code to chart the Typical Price in the main window for the CCI values of +100 or -100.

1) Upper overbought line....
Typical Price = 20-period SMA of TP + 100 x (0.015 x Mean Deviation) <----

2) Lower oversold line
Typical Price = 20-period SMA of TP - 100 x (0.015 x Mean Deviation) <----

That way the overbought and oversold region would be dynamically represented in the main chart window.

Is anyone able to post mq4 formula for this problem? Thank you.

I also want to pay attention to this topic.

Essentially what I am asking is how do you get the expected typical price from a predicted / known future CCI value? Re-arranging the CCI equation would get you there somewhat. But then how do you write the mq4 code for that re-arranged CCI equation?

If anyone has the answer it would be much appreciated.
Thank you