Update spline color in package

Hi there, I am currently working display MRT lines in Unreal.

I managed to get the color and update spline in the editor mode, it works perfectly fine. However, when I package it out, the spline appears grey (Color not updated) and the rest of the blueprint afterwards can be executed as well.

Below is how my blueprint looks like, it is in my blueprint class Event graph.

Hi @pineapple_friedrice,
I’m afraid I don’t know, and, if I’m not mistaken, your question doesn’t have anything to do with Cesium for Unreal. Perhaps you’d have more luck asking your question in a general Unreal Engine forum?

I searched up that “Set Unselected Spline Segment Color” function, and the docs explicitly state it is Editor only: