Expert Advisor with a "trailing limit order" fonction

Hello everyone, 

I would like you to code an EA with a "trailing limit order" fonction, if that makes sense.. because it's not really a limit order. (Please look at the Specifications, I made drawings easy to understand)

It’s the same principle as the trailing stop loss, but to open a position, not to close it. The trailing limit moves the limit order, the more the price progresses in the opposite direction, the goal is to place the limit order in the highest (or lowest) possible. 

The EA should contain :

1 - A trailing stop loss function.

2 - A « trailing limit order » function. 

3 - An inputs function, to modify certain parameters before launching the EA.

4 - A function to adjust the volumes of the lots according to the evolution of the price and the current orders.

I think it will be a fun code to make. 

I have a specifications document that you can download below.

I am not stubborn, and if you understand where I want to go with this EA and have better ideas, I will be very happy to discuss it with you !! 

Have a good day