Dropdown - How to pass multiple parameters

I have a dropdown that shows a list of properties. Each property has a Name, Price and Reference Number.

After a user fills out a form and selects the desired property, I want to send a request to the database to update the specific property. But to do that I need to pass the property reference.

In the dropdowns I can only have one parameter and that is the name, I can't figure out how I can pass the reference and if it needs another parameter like the price.

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