Is there an existing issue for this?

• I have searched the existing issues.

Please describe the feature you have in mind and explain what the current shortcomings are?

Currently whenever e.g. the folder path attribute of a Load Asset LOP or Load Shot LOP refers to a Houdini context option it doesn't trigger the callback to update the representation path whenever the context option changes inside Houdini. It requires a manual refresh and this disallows multi-shot workflows.

See relevant discussion here.

How would you imagine the implementation of the feature?

According to SideFX we should be able to have the update trigger if we use expressions instead of parameter callbacks instead.

https://www.sidefx.com/forum/topic/98147/?page=1#post-431289

Here's an example scene showing that working on a simple file:

solaris_contextoptions_python_expressions.zip

Are there any labels you wish to add?

• I have added the relevant labels to the enhancement request.

Describe alternatives you've considered:

Building complex custom callbacks - but it wouldn't work in all cases, like e.g. render clones.

Additional context:

No response