Hi @Coleman Milligan​ 

Checking the old unanswered questions and stumbled across this.

You can do that using the databricks widgets.

dbutils.widgets.dropdown("state", "CA", ["CA", "IL", "MI", "NY", "OR", "VA"])

If this widget is not helping you in passing parameters, you can do a try catch in all the notebooks to check if the parameter value you are passing is actually in the list of strings you have.

Hope this helps.

Cheers.