Add order overlay function in 3 Eas.

I have an Ea, I would implement an order overlay function.

I would like to implement a closing option of the last open order with the first (last order overlap).

it works as follows the last open order if it is close to the first open order and overlap the loss and guaranteed to profit it closes the last and the first order, this function is for when we are in a winning position and the market returns, for security it closes the order with a profit to the point of overlapping the first one and so it follows the strategy, if it returns to the necessary level it opens the order again and follows with the same logic in situations it closes all . 

They are 3 Eas, where 1 is in mt5 that operates in the stock exchange and the other 2 are forex one in mt5 and the other in mt4. (I want to put the overlay function in the 3 Eas

I have the source code of the 3 Eas cited

I have another Ea where it has the function of order superimposition that will serve as a model to exemplify what I want it to be done, in that I do not have the source code only the executable that has the function that I want to copy for the others 3 Eas that I quoted above .