Webhook variable substitution not working

[Viraj Sanghavi]

Hello,

We have configured Web-Hook URL - https://{my-function-app}.azurewebsites.net/api/jira-worklog/${project.key}/${issue.key} in JIRA for 3 events (worklog_created, worklog_updated and worklog_deleted). We have hosted JIRA on our own server.

Our endpoint is Azure function which is accessible by following URL. It's a function with anonymous access.
https://{my-function-app}.azurewebsites.net/api/jira-worklog/{projectKey?}/{issueKey?}

We are not receiving ${issue.key} and ${project.key} in the URL which we should by variable substitution as per documentation.

https://developer.atlassian.com/server/jira/platform/webhooks/

Regards,
Viraj