Re-coding the Sin Fractal indicator

I'm trying to convert this indicator to run on TradingView:
https://www.mql5.com/en/market/produ...20#description

The calculation seems straightforward but I'm getting really absurd numbers from this calculation. The steps for calculation are clearly shown on the image attached.

Here's what I do to find the correct sin value of the angle "a":

1. Find the close of the bar that the latest fractal appears on
2. Find the close of the latest bar (3rd bar from the fractal in the picture)
3. Subtract close of the fractal bar from the close of the latest bar, this gives us the value "b"
4. The latest bar is 3 bars away from the fractal bar, this gives us the value "h"
5. To find the value "c", do a basic hypotenuse calculation thus c = SQRT(h^2 + b^2)
6. SinFractal = 100 * (b / c)

This should do the trick but I'm getting very small numbers and the graph I draw on TradingView is hugely different from what I see on MetaTrader.
Any ideas about what I'm doing wrong here?

Bonjour,
Very intesting Indy
I trade it on H1 at the London open

Thanks
jf