[Andreas Blüher]

Hey Phil,

I’ve just setup an environment very similar to yours and if you look into Cascading Dropdown documentation you’ll find the following text:

The dropdowns can be single choice or multi choice. For single choice use a single line plain text field, and form multichoice use a multi line plain text field.

So the answer to your question is yes the fields need to be set to be text and yes your setup is possible.

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