Did you know that the "middle band" is actually the SMA20? Well, it is.
So, your strategy is basically a crossing of SMA8 with SMA20.

You must come up with another exit stategy, because the SMA8 can move up & down crossing the SMA20 many times during one bar period. This will result in many consecutive open&close orders, thus resulting in losses.
What do you think? How should the EA exit?

I think that it will be better to add other indicators/filters to this strategy. There will be many whipsaws which will make the EA to open a bad trade.

Another problem is TP and TS. You said that TP=TS=30. What's the point of TS then?

Bye.