EA to execute exit order

Hello,

I have one mt4 account, always trade the same currency pair. For buy, I may trade a few buys with increased lot size. Same as for sale orders.

Here is the exit criteria: 

assume directional trending, all buy or all sell positions.

1. if only one position, say  buy, P1, if the loss is over 0.2% of the account balance, exit.

2. if there is a second buy position in the account, assume p1 and P2, and P2 lot is larger than P1. Exit P1 if P1 loss is over 0.1% of the then account balance. Exit P2 if P2 loss is over 1% of the balance.

3. if there are more buy positions added, only the last position, largest lot size, exit loss is 1%, all the rests exit loss at 0.1%

Let me know.