I have some problem when use mesh.createInstance

  1. At the first time, I can not see the instances of the source mesh:
    then I saw the warning

  2. then I edit the code:
    it is not what I want to achieve

  3. then I edit the model in blender (join the bubble and the yellow sphere use join command)
    but it I can not solve the problem

  4. then I have to import twice
    the effect is what I want to achieve, but I think it is not the right way

  5. then I want to know how can I achieve the effect( like step 4)just import once。
    need I edit the model? or just edit the code, and how to edit?

We’ve got you covered: Use an AssetContainer - Babylon.js Documentation

Yes, I think it is the right way! thanks!