Yeah, I think it is not a hard thing to be added to the code of the Experts. I mean you can create the EAs with EA Studio or FSB Pro, and after that add it in the code.
However, once again I say that it might not bring you the results you expect. Why is that?
If you set to enter in a new position with 1% of your account. That is not how much you will lose if the SL is hit. That is how much you are using from your account but the loss could be bigger or smaller than 1%. What if you trade with 10 EAs? Could you handle a loss bigger than 10%?
There are many other similar questions, which at the end will bring you to the point where you would like to trade with fixed lots. Anyway, give it a try, but I just say that it does not worth losing time on that.
Cheers,