UFUNCTION with template type does not compile

[Dartanlla]

I did some research and found in the past Epic said that UFUNCTION() does not support the template type.

[Request] Blueprints: Support for Template Types

Here is a workaround for using wildcard pins. This sounds like circumventing the header tool that you were referring to:

[Tutorial] How to accept wildcard structs in your UFUNCTIONs - Community Content, Tools and Tutorials - Unreal Engine Forums,

Also, it looks like you are able to use the template type without UFUNCTION in C++ (not blueprints):

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