Unreal 5.3 Modifying properties (color) of individual points in a Point Cloud during gameplay

Unreal 5.3 Modifying properties (color) of individual points in a Point Cloud during gameplay

I want to change the properties (e.g. color) of individual points in a Point Cloud based on user interaction (via linetrace) during the gameplay? I could change the color of points in a box/sphere to one color, but I cannot apply multiple colors. The blueprint function (Set Point Cloud with Colors) is not accessable from Blueprints.

Set Point Cloud with Colors
https://docs.unrealengine.com/5.3/en-US/BlueprintAPI/PointCloud/SetPointCloudwithColors/

Anyone has any hints how this could be solved?