I’ve just upgraded my InProcess .Net 6 Function app to Isolated .Net 8. I’m facing the same issue. I was previously declaring object like configuration in local.settings.json below Values property. It is correctly loaded by the configuration builder but can’t be used within trigger bindings using % MyBlock:MyParam% expressions. The only workaround is to flatten those expressions within the Values property : MyBlock__MyParam. Is there already a GitHub issue referencing this problem or do you have other workaround to provide ? I haven’t deployed yet on Azure but I guess it won’t work also as the source configuration is coming from AppConfiguration.