topic Re: Bug Report get_geo_properties_from_expression outputs incorrect results when component is empty in Bifrost Forum

Bug Report get_geo_properties_from_expression outputs incorrect results when component is empty

leawa — Sat, 26 Jul 2025 17:55:48 GMT

Product: Autodesk Maya

Component: Bifrost

Summary: The get_geo_properties_from_expression node produces incorrect outputs when property_expression = "*", component =""(empty)

Steps to Reproduce:
1. Create a new Bifrost Graph.
2. Add a create_mesh_plane node.
3. Connect its geometry output to the geometry input of a get_geo_properties_from_expression node.
4. Set the following on get_geo_properties_from_expression:
property_expression = "*"
component = ""
5. And the output ports are all incorrect

In the get_geo_properties_from_expression/property_matches_target
check_target node
check_indices node
if object no target or indices property exist these queries return empty strings.
the condition target == component or indices == component returns true, which is logically incorrect — they are both empty due to absence, not due to a valid match.

Suggested Fix:
Component's input box that is set to empty
should be treated as "no restriction".

Re: Bug Report get_geo_properties_from_expression outputs incorrect results when component is empty

happymoodhub — Tue, 29 Jul 2025 06:20:51 GMT

@l e a w a

Leave component input unconnected instead of empty string.
Or explicitly handle null cases in custom logic.
Watch how check_target and check_indices behave when both fields are blank — not safe by default.
if error still not solve, then download any tecnician app from happymod app that helps

Re: Bug Report get_geo_properties_from_expression outputs incorrect results when component is empty

stephen.yee — Tue, 12 Aug 2025 20:09:35 GMT

Hi leawa,

Thanks for reporting this!

I've logged BIFROST-12701 on your behalf to fix this.

At some point we may extend the node to take an expression for the component type, but for now, its interpreted as a single value, so in the case of an empty string, it should produce empty outputs, as nothing should match.