topic Re: Issue while implementation of Use Genie in multi-agent systems in Generative AI https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136525#M1297 <P>Hi Ajay, it looks like the Databricks multi-agent Genie docs haven’t been updated for langchain v1. You’ll need to remove or replace the post_model_hook parameter with the new callback or event handling mechanisms in v1. Checking the latest langchain migration guide should help adjust the code accordingly.</P> Wed, 29 Oct 2025 10:06:23 GMT Harris234 2025-10-29T10:06:23Z Issue while implementation of Use Genie in multi-agent systems https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136497#M1294 <P><SPAN>I am testing&nbsp;</SPAN><A class="" href="https://docs.databricks.com/aws/en/generative-ai/agent-framework/multi-agent-genie" target="_blank" rel="noopener noreferrer">https://docs.databricks.com/aws/en/generative-ai/agent-framework/multi-agent-genie</A><SPAN>&nbsp;and looks code is not up to date and it is failing as longchain version upgraded to v1 from v0 that does not support post_model_hook parameter.<BR />I tried multiple way but it is not working</SPAN></P> Wed, 29 Oct 2025 04:37:55 GMT https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136497#M1294 Ajay-Pandey 2025-10-29T04:37:55Z Re: Issue while implementation of Use Genie in multi-agent systems https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136525#M1297 <P>Hi Ajay, it looks like the Databricks multi-agent Genie docs haven’t been updated for langchain v1. You’ll need to remove or replace the post_model_hook parameter with the new callback or event handling mechanisms in v1. Checking the latest langchain migration guide should help adjust the code accordingly.</P> Wed, 29 Oct 2025 10:06:23 GMT https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136525#M1297 Harris234 2025-10-29T10:06:23Z Re: Issue while implementation of Use Genie in multi-agent systems https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136890#M1313 <P>I tried but not working while calling agent</P> Fri, 31 Oct 2025 08:03:09 GMT https://community.databricks.com/t5/generative-ai/issue-while-implementation-of-use-genie-in-multi-agent-systems/m-p/136890#M1313 Ajay-Pandey 2025-10-31T08:03:09Z