Parameters for Custom BP Function

Development Programming & Scripting Blueprint
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1

Hello,

I have encountered a strange behaviour in the Unreal Engine.
Maybe someone here can explain it to me.

I have two functions as a part of an ActorComponent

	UFUNCTION(BlueprintCallable,Category="WorldChunkManager")
	void GenerateTrack(FChunk &chunk);

	UFUNCTION(BlueprintCallable, Category = "WorldChunkManager")
	void RenderChunk(FChunk chunk);

Please note that one is a reference parameter and the other isn’t.

Now, when I access these functions in the BP Editor, I get this

60119-strange_bp.png
60119-strange_bp.png800×600 78.4 KB

Why is the input parameter of the function with the reference param on the other side?
How can I ever connect that pin as an input?

Thanks,

Marc

2

Here you go: C++ reference parameter is return value in Blueprint - Blueprint - Unreal Engine Forums

3

Thanks! Such an obscure syntax, hidden away!