Thoughts on a new EA

[TipsyWisdom]

Hello All,
I have an EA for thought but I am unable to logically think how to create it with my limited knowledge and experience here.

I would like to watch for the price to go either long or short 2*ATR or perhaps a certain # of pips, then execute a trade in the opposite direction when the MFI says the trend is going to the opposite direction.

I am unsure mostly on how to wait for price to move before checking other conditions is the simplest way to say it?