modify an exhisting easy EA

Job ID: 33610603

Budget: €30 – €250 EUR

Hi Folks, I need to modify an existing extremely simple EA by adding 3 buttons:
1) when A is pressed, it closes half of the positions currently open (half of the lots open)
2) when B is pressed, it closes all the positions on the chart
3) when C is pressed, it moves the SL to Break Even, (some wiggle room, say 3 points to accommodate some slippage, plus commissions paid for the trade, each trade)
Related categories: Metatrader MQL4