NeXplorer.JS | NodeJS file browser made with NWJS | Runtime Evironment library

I tried to find the position(x,y,z coordinates) of a surface in the 3D model when it is clicked using this repo. I tried clicking all over the model, but I am getting the same position (x,y,z value) for every click. Click here to see the position when i click on a surface and when I try clicking (somewhere else) in the model, I am getting the same position(x,y,z value) for that too. I have tried exactly the same thing given in the repo link for this model (urn:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YXBwdGVzdGJ1Y2tldG5pc2hhbnQyL2dhdGVob3VzZSUyMDEubndk). How to find the position(x,y,z coordinates) in the model? Thanks in advance.