I know this is old but I thought I would add seeing that I also just tried to create an EA for this strategy. Here's the link to the rules - SIMPLE and PROFITABLE Forex Scalping Strategy!
I just worked on the Buy leg to see if I could get it working. Also worked on the 15min chart, referencing the 1H, etc.
I have been working on this for nearly 10 days now, changing as much as I can to try and make a profit - failed every time. I tested it on 1 month, 3 months, 6 months, different pairs, different pip levels...
I would literally make more money doing the complete opposite every time...