HI Team,
We have follwed the below steps to enable webhook, Every new commit build is not getting triggered
To enable webhooks in your repository: 
- In Bamboo, generate a URL used as a destination for your webhook:
 - In the top navigation bar, select Specs > Setup Specs Repository.
- Select your project type.
- Select the repository for Bamboo Specs. 
- Copy the URL that is generated for you as the destination for the webhook.
 
- In the repository you want to use for storing Bamboo Specs, use the Bamboo URL to enable the webhook:- Go to your repository settings. 
- Find webhook-specific configuration. 
- Paste in the URL Bamboo provided you with.