Code for martingale metatrader 4

Hello,

I am in the need of a simple mql4 code which could be implemented into an existing EA. What I need the code to do is to open a new order immediately after a losing trade with double the trade amount. If this new trade loses as well then the code will open a new trade again doubling the amount. If the trade loses three times in a row then it the code will not double again, but reset trade size to the original amount and wait for a new signal.

I want to use this code on a timebased EA, where a candle is the duration of the trade, so the code will open a new trade after a loss (a candle), and then again if it loses a second time - maximum three trades in a row (three candles).

Could anyone help?