Index Indicator (Indicator of an Indicator)

[[Deleted]]

Hi guys, I have seen this indicator: Will-Spread .mq4 - MQL4 Code Base

and I want to have an index indicator that computes and plots the graph of the index of the above indicator?

the formula is this:

[TODAY'S READING of above indicator - LOWEST READING of above indicator(say in the last 20days)]

---------------------------------------------------------------------------------------------------- X 100

[HIGHEST READING of above indicator(say in the last 20days) - LOWEST READING of above indicator(say in the last 20days)]

variable: last X days

any help is appreciated because i am not a programmer.

[ExtremeTrader]

So that's basically a Stochastic version of any indicator. Nice idea. I have tried it once and it has potential...