Count number of times a stock declines 6% in next 6 months with Amibroker

[helpme]

I would like to count the number of times a stock price drops 5% in the next 3 months using Amibroker AFL code. I guess this will require using Ref() to reference future values.

https://www.amibroker.com/guide/afl/ref.html

Can someone provide some hint as a starting point?

 

[Roller_1]

the previous three months? You can't count the future! =]