[amibroker] A very basic formula question

["alogicalinvestor" <alogicalinvestor@xxxxxxxxx>]

Friends,

A very basic Amibroker formula question from a newbie.

I am trying to write an exploration that finds stocks whose RSI line
moved below 70 today after being above 70 for the previous three days.

I am not sure how to handle the 'previous three days' part.

One way I can think of is Ref(RSI, -1), Ref(RSI,-2) and then checking
these RSI values individually to determine if they were above 70.

But I am sure there is a simpler way.

Thanks,
vps


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