IQL Multiple Select

Dave Ellard_2tidvr

I am very new to Insight and IQL and forgive me if I ask the question incorrectly. The best way of explaining the issue is that I want to be able to have a drop down list for example that contains Countries and I can select multiple countries at once i.e. UK, France and Germany. I then have a 2nd drop down list that will present cities in those countries so my 2nd drop down should be dynamically populated with London, Birmingham, Manchester, Paris, Nice and Berlin etc. Can I write an IQL statement that will do this? 

Kian Stack Mumo Systems

@Dave Ellard, 

I was able to do this by created City as an object type in my Object Schema. For each city, I have a text line attribute called Country that marks what Country it belongs to (this could be a picklist as well).

On my other object type, I have a Country attribute which is a picklist with all my countries, and then an Object selector attribute for the City attribute. For the city attribute, I filter using the IQL:

 

As I update the countries in my picklist, I can see the city options changing to match!