Use CI/CD variables in rules:changes

Gitlab version: 14.7

I am trying to use CI/CD variables in gitlab-ci template.
Requirnemnts:
Add a certain job only when a certain condition met and changes have been made to a directory defined using CI/CD variables.

gitlab-ci file:

#CI/CD variable
  PROJECT_DIRECTORY: "**/src/folder/*"
#Rules 
.rules:project:build:docker-image:
  rules:
    - <<: *if-merge-request
      changes:
        - $PROJECT_DIRECTORY
    - when: never

.rules:project:publish:production:
  rules:
    - <<: *if-push-to-production
      changes:
        - $PROJECT_DIRECTORY
    - when: never


.rules:project:publish:staging:
  rules:
    - <<: *if-push-to-master
      changes:
        - $ROJECT_DIRECTORY
    - when: never

I used the exact same gitlab ci format but without using CI/CD variables. It works as expected. but with CI/CD variables in rules:changes it’s not working.

gitlab-ci file that works:


.rules:project:build:docker-image:
  rules:
    - <<: *if-merge-request
      changes:
        - "**/src/folder/*"
    - when: never

.rules:project:publish:production:
  rules:
    - <<: *if-push-to-production
      changes:
        - "**/src/folder/*"
    - when: never

.rules:project:publish:staging:
  rules:
    - <<: *if-push-to-master
      changes:
        - "**/src/folder/*"
    - when: never

Hi all.

Same issue. Any solution?