I am new to Mendix, I am using Rest API which return multiple values like MetaData Tag for an Object, I am not getting how to store these multiple values in Entity. If I used the Variable as String it is showing Empty. Can you please help here
I suppose you have a correct domain model with entity/entities.
You can use the (associated) entities from your domain model in an Import Mapping, to map your API response to your domain model. Please read the documentation here: Import Mapping