Modify an existing EA

I WOULD LIKE A DEVELOPER TO MODIFY MY EXISTING EA THAT WORKS ON DAILY OPEN AND CLOSE STRATEGY,IT PLOTS DAILY OPEN AND CLOSE LINES AUTOMATICALLY AND THEN EXECUTES BUY ORDER ABOVE THE PREVIOUS DAYS OPEN AND A SELL ORDER BELOW PREVIOUS DAYS CLOSE.I WOULD LIKE THE FOLLOWING MODIFICATIONS:

1.I SHOULD BE ABLE TO PLOT THE LINES MYSELF, I WOULD DRAW TWO LINES FOR THE PREVIOUS DAILY CANDLE OPEN AND CLOSE 

2.THE EA should buy when the candle closes above the green line and close the position when the candle closes below the green line.

3.The EA should sell below the red line and close when the candle closes above the red line

4.I should be able to draw multiple green and red lines ,this is just to define and catch pips on invalidation of order blocks,and the same rules will apply buy above green sell below red 

5.the EA should not meddle with my positions that are already running.

please let me know if you could do it asap.

regards