I am developing a Zap in which I cycle several segments (each one containing several email addresses). For each segment I need to add each email address to a different Custom Audience. How can I do this dynamically?

I’ve tried using the custom drop down menu instead of the Custom Audience one (see screenshot) but when I enter the Custom Audience name I receive this error message:

“Unable to get selected custom audience. Unsupported get request. Object with ID 'CA Name - Code' does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation.”

I am considering building myself an object for each segment that contains the name and the Custom Audience Code but I am not sure of how to structure the object. I would like to reproduce the same structure you can see in the screenshot (although I had to cover the Custom Audience name and the code) but how?

Have you encountered a similar issue? Any suggestion?