the procedural grid has no collision how to fix it?

the code is createmeshsection coming after begin play. collision is enabled, but the character falls through the mesh

Your mesh might be too thin to register the collision.

You could try enabling “Trace complex on move” for the procedural mesh (though it’s set function). It will do a per triangle collision test.

Can I find out more where I can find Trace complex on move?

Drag out the output / return pin where you create your procedural mesh at start tying out “Trace complex on move”. You should find the node for the set version. Once it’s in your blueprint just check it (it’s a boolean)

Thanks! I don’t know exactly what helped “Controls whether the complex”, “Trace complex on move” or triangulation correction, but now everything works