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Is there a reason you are doing this, instead of having a type def'd cluster? Then you can use the Bundle/Unbundle by name to get and set values within a single wire? Then probing is easier, and adding or updating data types can be done by updating that one cluster. Typically Variant Attributes are used in places where an architecture wants to abstract away some transport layer that can't be known at runtime. In your case we know the data type of all the individual elements. If you were doing some kind of flatten to a Variant, then sending over TCP, you'd want some standard way to unwrap everything once it got back. I've also seen it used where a single User Event handles many different events, by using the Variant as the data type. Then each specific User Event will have a Variant to Data to convert back to whatever that specific event wants. There isn't anything wrong with what you are doing, I'm just unsure if it is necessary.