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SUBMIT YOUR IDEAAlteryx training wheels! :)
A fantastic opportunity to practise chained apps. I wish it was better known that using the field names trick to populate a dropdown isn't a good way of doing things as it's not dynamic to changes in the data source! It creates an interface dependency on the workflow being run, which is chicken and egg, the interface can't load if the input data hasn't been read into the dropdown. It works temporarily because the workflow xml is written whilst developing in designer, but, if hosted on gallery this wouldn't work the way people expect. Anyway, good learning experience!
3 apps are created
Further guide: https://www.thedataschool.co.uk/brian-scally/chaining-apps-in-alteryx
getting my app experience
app2
app3
Catchy one - the trick with using external files for drop down rather than connecting the drop down to the datastream within workflow (described here) was crucial for me.