Help with custom range

[jzfusion]

i want to be able to create this condition:

open of yesterday's candle (minus) close of 2 days ago is greater than 30% of ( today's close + close of yesterday )
How do I make a formula out of this.
Does it have to be custom code?

[sli1 0]

look at formula blocks. Have a go and someone will review.

[jzfusion]

So I managed to do most of it with the formula block using the candle properties however I'm stuck with doing things like
30% of the range of the last 3 days?
I couldn't see any way of doing that.

[l'andorrà]

You can catch all those price levels in different variables and then do the calculations.