Modification EA Donchian (hedge and calculation)

I have an existing simple EA that trades like this.

See screenshot.

I want 2 changes on it:

1)

*Hedge curves

Imagine Buys are open in curve A. 1 If price crosses Donchian Middle line downwards, I want all open Buy trades to be hedged with one Sell trade. So, if 12 Buys open of 0.01 lot: 1 Sell trade of 0.12 lot

2)

*New variable: AvTP lot foundation to correct hedged trades (points):

Imagine the hedge brings a (locked) loss. Imagine -€4 euro.

From the settings: TP in € is €1

Now AvTP lot foundation to correct the hedged trades I fill in 110 points

So the question is:

If you know:

-the locked loss (example -€4)

-the TP target in € (example €1)

-the desired points move (example 110 points)

Can you calculate the lotsize you need to reach (locked loss 4 + TP € target 1) = €5 when the price moves 110 points

Read Please:

 when you react also give me an idea how you want to solve the calculation question.

Plain text ‘I can do it’ applications will be rejected.