i feel dumb asking this, but I can't figure it out: i have a custom record. Custom record has an entity field on it. I want to add an address field, and i want to be able to select out of addresses related to that entity. The drop down loads blank and I can't add any filtering to it. What am I missing?

On the custom entity field, you have source set to (record: customer) and (field: address)?

yes