Pipelines are not run automatically from branch

[Victor]

Hi problem is that pipelines are not run automatically when I merged with master branch or another brunch. My code has branches: master: but it is not trigered automatically after merge. Could you please help me?

{code:xml}

image:
name: docker file
aws:
access-key: $AWS_ACCESS_KEY_ID
secret-key: $AWS_SECRET_ACCESS_KEY
options:
max-time: 60
# used because whe has a lot of issues with OutOfMemory used gradle on pipelines
size: 2x
pipelines:
default:
- step:
name: Build and test
caches:
- gradlecache
- gradlewrapper
script:
- chmod +x gradlew
- echo "$ANDROID_MLITE_KEYSTORE" | base64 -di > /opt/atlassian/pipelines/agent/build/app/app-release-key.jks
- bash ./gradlew clean build
artifacts:
- app/build/outputs/apk/*/*/*.apk

branches:
# Release version for customers
master:
- step:
name: Build live
caches:
- gradlecache
- gradlewrapper
script:
- chmod +x gradlew
- echo "$ANDROID_MLITE_KEYSTORE" | base64 -di > /opt/atlassian/pipelines/agent/build/app/app-release-key.jks
- bash ./gradlew clean assembleLive
artifacts:
- app/build/outputs/apk/*/*/*.apk
- step:
name: Deploy the live apps to AppCenter
deployment: production
image:
name: docker
aws:
access-key: $AWS_ACCESS_KEY_ID
secret-key: $AWS_SECRET_ACCESS_KEY
script:
- echo "Upload artifacts to AppCenter"
...

{code}