Bitbucket trigger Bamboo Build on Pull Request

[Jonathan Vaughan]

We are running:

• Atlassian Bitbucket v7.4.0 (GIT)
• Atlassian Bamboo version 6.10.4 build 61009

We are following GitFlow.

What I'm looking to do:

I'm looking to have the Bamboo build trigger on Pull Request creation rather than just build from code commit. As when we create a PR now, no build is run. The reason we want this is that I would like to use SonarQube Pull Request analysis, but need the PR present to perform this analysis.

What I have done:
Looked over documentation and similar search results to see how to achieve this.

The closest I can find is:
https://support.atlassian.com/bitbucket-cloud/docs/configure-bitbucket-pipelinesyml/#Configurebitbucket-pipelines.yml-ci_pull-requests

But this looks to be cloud only. 

[Jonathan Vaughan]

Anyone? 

If this can't be done natively via the UI, Can it be achieved by hooks?

This must be a reasonably common request I would have assumed.