Hello I am still somewhat new to Babylon and i'm having the following problem. I am loading an .obj model into my scene and I wish to apply a standard material onto the meshes, after the model has loaded.  But my problem is, that the materials are not applied in the success callback. I have a button to maually apply the materials and it works fine. document.getElementById("applyMaterials").addEventListener("click", function(e) { var meshMaterial = new BABYLON.StandardMaterial("meshMa