@Tashfeen Ekram Thanks for the question, This seems like similar issue with #4348, could you please check on this? We have a PR on this already, will let you know when it get merged.
Here are some video resources available to share:
5 minute intro: https://www.youtube.com/watch?v=g8ck1hcTTJk
20 minute getting started video: https://www.youtube.com/watch?v=r9WQPSaLnaU
20 minute advanced language modeling: https://www.youtube.com/watch?v=wG8emu4v6hk
Build an end to end Weather Bot (slightly outdated): https://www.youtube.com/watch?v=ZNcfIgO8biw
As far as interop between v4 waterfall dialogs, custom code, and Composer built dialogs, see this document describing the process to achieve this: https://learn.microsoft.com/en-us/composer/how-to-add-custom-action
Start by creating all the new Azure resources, and then copy the generated JSON file from the command line and paste it to your Composer publish configuration. We will continue to improve debugging experience in Composer and this effort will be ongoing.