Ambient Occlusion (AOMap) not working

Hi, I need to add an AOMap for getting better output in my project. I tried a lot. Still I couldn’t find the solution. How to apply this. Please say any suggestions.
I have seen this following example in
three.js examples
in this example, we can see the AOMap is working.
but when I download the same model and same texture and try this in threejs editor to see the AOMap effects. But in that is not working. Please help.

I tried a lot.

Adding it as MeshStandardMaterial.aoMap (or MeshPhysicalMaterial.aoMap) should be enough - not sure if there’s much else to try. :thinking:

Could you specify how it is not working? Did you try previewing the model (with applied aoMap as a texture) on glTF Viewer?