How to get Team City to start building only at the request of Github pull, if it contains changes in a specific folder

Question

I have a TeamCity configuration to track Github pull requests, so that they will receive any download requests from Github and then run the build.

Now I want it to call a buddy for transfer requests containing changes to a specific folder.

Let's say my repo root folder is c: \ myProject, the specific folder is c: \ myProject \ HelloWorld. My goal is to make TeamCity run the build only if the transfer request contains changes to the files in the HelloWorld folder.

Any thoughts on how to set it up? Many thanks.

Answer 1

VCS Ant, +: HelloWorld/* * ( ).