I met an warning like this:
Empty input file attribute when evaluating ‘/obj/sector_grass_top1/topnet/build_mountain/customfile1’ with work item ‘build_mountain0_10’

But I don't understand what does it mean, and how to reslove it. The hdaprocess is not run correctly.

Hi watsonsong,

Could you please attach the file that you are having trouble with?

I upload the test.zip， you can open the hip/sector_grass_top.hip and cook the ‘build_mountain’ in top graph.

It seems occur only when I use ‘Input File Source’ as the “Custom File Paths”, and specify each Input File as `@pdg_input.0` and
`@pdg_input.1`. Is there something I do wrong?