MQL4/5 Enter market excecution at specfic IF price is outside Bollinger bands.

Hello

I think my requirement is quite simple. Here is an example of what I would like it to do:

1. I enter a specific price level e.g. 12250 (Dax)

The Robot buys that level IF price is outside the lower Bollinger Band

2.I enter a specific price e.g. 12300 (Dax)

The Robot sells that level IF price is outside the upper Bollinger Band

The variables I need are Bollinger Band averaging period and std.dev., Stop loss, take profit and position size. I have other EAs to do break even etc.

This needs to market orders and not a pending order.

PS the menu didn't let me select MQL4 which is what I want but if MQL5 is easier I can use that too.