Hidden Trailing buy/sell stop order EA

i need an ea that will trail hedge my position. the way it works is that when my position starts profiting the ea will follow the trade and apply a hidden trailing buy/sell stop order.
for example
i have open order for  buy EURUSD 1.2345
the market moves in my favor, the price now is 1.2645, 30pips profit
now, the ea will place a hidden sell stop order 10 pips from current price 1.2545
if the price moves higher, the ea will trail the order
if the price moves lower and the hidden stop order is triggered, the ea will open a sell order
in this case we will have one buy order order and one sell order

additional rules
the ea will not trail if the position is on losing side
in case the original order is closed by profit or manually, the other order will also be closed
i should have an option on which trade to follow, either magic number or comment, because i also have other eas running that i dont need to be hedged

the input parameters includes
lot  -   the size to open
magic numer/comment  -  which trade to follow. the ea will only follow with specific magic number or comment
pips in profit  - pips in which the ea will start following the trade. ea will start tariling the order only if the trade is in profit
trailing pips  -  the distance from current price which the ea will start trailing. ea will have a hidden buy/sell stop order which also trail the order