I'm agraid fxDreema cannot import external mq4 files. That means you will have to craete it here from scratch. Certainly it's an ambitious project, but are you sure you want to base it on a martingale?
Before doing that I recommend you to read the following threads:
https://fxdreema.com/forum/topic/6624/problem-in-martingale/7
https://fxdreema.com/forum/topic/5500/reset-martingale/8
https://fxdreema.com/forum/topic/7108/how-to-use-martingale/7