Using $SNAPCRAFT_PROJECT_VERSION with 'snapcraftctl set-version'

Hmm snapcraftctl pull didn’t respect the env variable :

download-deb:
    plugin: dump
    source: https://link/name_$PROJECT_VERSION_amd64.deb
    source-type: deb
    override-pull: |
        export PROJECT_VERSION=123
        printenv               # <---- shows PROJECT_VERSION=123
        snapcraftctl pull      # <---- variable in link does not become 123 but stays "$PROJECT_VERSION"
        printenv               # <---- shows PROJECT_VERSION=123

edit: It looks like snapcraftctl doesn’t respect changes