I have a Kiosk screen with GetRecords and want to use the selected records in a custom function.

My particular case is to set a lookup value on the selected records. Generally speaking though, I want to work with the selected records in a function. I am not sure if this is possible given this note in the docs:

> The selected records can be used in decision criteria or in email notification templates

If it is possible, how to access the records map ie function? Is the map (or array) passed as a param at all?