Help! There's a problem with creating different colors for thin instances using node materials

Questions
1

This is the playground link ：

This is the node material that I created：
nodeMaterial.zip (1.6 KB)
When I changed the instance_id parameter to 1, there was a problem with the effect.

2

It is the noise when judging isEqual between float 1.0000 and int 1.

5 Likes
3

Thank you very much for your help!