You need to provide data to the random tri coord node, if not, all particles will spawn on the same location. Instead of using this custom niagara module, after you sampled the skeletal mesh you should use the skeletal mesh position module, that will do exactly what you are trying to achieve
Thank you. I’m sorry but i’m quite new in unreal… Did you mean the Skeletal Mesh Location module? Like this one?
It doesn’t change anything… Surely it’s some data missing here too. I cannot find any tutorials on that.