Build Amibroker Indicator

I need syntax for my Amibroker to be able to scan:
1. Stock that higher than certain days under certain days condition
2. Build measurement risk and rewards in scanner
3. Colouring bar for certain criteria

Sorry, Im newbiew for Amibroker but I can imagine some of keyword that may help you are:

1. Barsince (to calculate how many days since set up)
2. Highest Betwen Close and Open (I used full bar boddy instead of High)
3. Simple Moving average
4. Average volume

I think the formula I want to have is not complicated...So please come with your best price.