How to change gitlab commit status

stages:

• analyze
  sonar_analyze:
  stage: analyze
  before_script:
  • echo “before_script”
    script:
  • sh /opt/gitlab-ci/sonar_analyze.sh
  • echo $?
    allow_failure: false
    after_script:
  • echo “after_script”

As the above code, get ? value, the question is : How do you go from the ?'s value to change gitlab pipeline to failture