View internal function code

Hey guys. I have a very simple question.

I am trying to convert a metatrader indicator to tradestation.
In tradestation, you can open any fuction and view the internal calculations very easily. Can I open a fuction within metatrader and do the same?

I want to see the internal code of iWPR (%R). This inputs the length and shift values, but doesn't yield the same results as the tradestation equivalent does.

Thanks for you help.

mrLogik

%R = (HIGH(i-n)-CLOSE)/(HIGH(i-n)-LOW(i-n))*100

Where:
CLOSE — is today’s closing price;
HIGH(i-n) — is the highest high over a number (n) of previous periods;
LOW(i-n) — is the lowest low over a number (n) of previous periods.

And the code for TS:

{*****************************************
Description: Percent R
Provided By: Omega Research, Inc. (c) Copyright 1999
*****************************************}

Inputs: Length(NumericSimple);
Variables: HiLoDiff(0);

HiLoDiff = Highest(High, Length) - Lowest(Low, Length);

If HiLoDiff <> 0 Then
PercentR = 100 - ((Highest(High, Length) - Close) / HiLoDiff) * 100
Else
PercentR = 0;