Build an EA based on grid strategy

The strategy is the following.

Once we active the EA it will open a trade either long or short. This position will have a TP and an hedge level. If hit the TP cancel all the other pending orders and close all the open orders and open a new position on the opposition direction (like if you hit long tp, open a new short.

If it hits the hedge level it will open a bigger lot on the opposite direction. Example:

I open 1.00 lot long with 400 points TP and an hedge of 100 points. If it goes down and hit hedge (100 below long entry), I will open 2.00 lot short with a TP as big as the long, 400 points. If it does not hit the TP on the short position and comes back to my long entry level I'll open another long position with the size of 2.6 lots. If it goes up and hit the long TP I'll close all the positions. The losing short and the longs in profit. 

And I'll will keep hedging my trading till I hit one of the TP sides. Once TP hit close all the positions and open another position on the opposite direction of the last one.

The hedge position size has always to be bigger than the last opposite position. Like: If I'm on a long and goes and hit hedge level, open a short bigger than the last long position

The EA needs some inputs as following:

1- direction of the first entry

2- lot multiplier (like a martingale kinda thing) based on the last lot of the opposite trading.

3- hedge gap size (points and percentage option)

4- TP level based  (points and percentage option)

5- initial lot size

6- trading hours (false/true option)