[amibroker] Simple Question : How do I specify the previous day's price

[Tomas <tomas986@xxxxxxxxx>]

Hi,

I just registered Amibroker a week ago, and in the process of testing out some of the features.

I spent the last few hours trying to figure this issue out, but have no luck.  This is a simple
thing, but the array concept of AFL is a little confusing to me.

My issue is that I want to write simple buy signal that goes like this:

Buy: 
- when the has been three down days in a row
- and the volume for those down days was below average (50 day)

How would you right an AFL buy signal for that?

My problem is that I don't know how to specify the previous day's price and previuos, previous
day's price.

Thanks for the help in advance.
tomas



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