How to reference non price data?

I have a csv file which looks like this:

date,value
2017-05-18,2
2017-05-19,2
2017-05-22,1
2017-05-23,1
2017-05-24,1
2017-05-25,1
2017-05-26,3

I want to iterate through these dates and perform an action (based on the second column) on a symbol.
I've imported the csv using the import wizard and ticked the box for no quotation data. The first column I defined as 'date' and the second I defined as 'aux1'.
Can someone please point me in the right direction on how I might achieve this?

You're are not telling the exact end result (as most likely you dont need the loop). Anyway, Check the following for the imported ticker as a symbol:

Plot( Aux1, "Aux1", colorRed );
Plot( DateNum(), "Date", colorBlue );

or if you want to reference it from some other ticker:

http://www.amibroker.com/guide/afl/foreign.html

Thank teyano. I've been away from Amibroker for a few months and I feel like I've forgotten so much already. Thanks for the push in the right direction.