When Created a pbrmaterial from node material error occurring in babylon js

Questions
#1

Texturing is getting applied when we have used direct output to fragment output but when added pbrmetallicroughness error occurs in run time …

Link for material nodes

error:

Uncaught TypeError: Cannot read property ‘getInputByName’ of undefined
at NodeMaterial._restoreConnections (nodeMaterial.js:1028)
at NodeMaterial._restoreConnections (nodeMaterial.js:1033)
at NodeMaterial.loadFromSerialization (nodeMaterial.js:1068)
at XMLHttpRequest.eval (nodeMaterial.js:1145)

#2

It does work for me:

https://playground.babylonjs.com/#FCCS47#1

#3

Yes but when i try to change texture dynamically using babylon js code getting the above error with br materials here is the code for that

 NodeMaterial.ParseFromSnippetAsync("JDC8BL", scene).then(nodeMaterial  => {
                console.log('dddd');                    
                let maskedblocks = nodeMaterial.getTextureBlocks();
                for(var i=0;i<maskedblocks.length-1;i++)
                {
                    if(maskedblocks[i].name="BookMatchUV1")
                    {
                        maskedblocks[i].texture =new Texture(Globals.CurrentTexture.hdimageurl,scene);
                    }
                    else if (maskedblocks[i].name ="BookMatchUV2")
                    {
                        maskedblocks[i].texture =new Texture(Globals.CurrentTexture.hdimageurl,scene);
                    }                           
                }
                Globals.PickedMesh.material=nodeMaterial;                
            });
#4

You should use “==” and not “=” when testing maskedblocks[i].name.