As soon as a trader opens an order the Expert set a Stop loss and a Take profit at a distance of 10 points, and opens a new order with a doubled lot in the opposite direction and set for it a Stop loss and a Take profit at a distance of 10 points from the open price. You can change Stop loss and Take profit.

The Expert does not influence orders if their Magic Number is not 0. The Expert places its own order with Magic Number = 33.