[BUG]: split express function doesnt work variables get from parameters.

[Cogi]

What happened?

parameters:
  - name: NODE_ENV
    type: string
  - name: IMG_NAME
    type: string
  - name: IMG_TAG
    type: string
  - name: AZURE_APP_SLOT
    type: string
    # Likes ase,brs,cnc
  - name: AZURE_APP_REGIONS
    type: string

jobs:
  - job: deploy_service_to_slot
    pool: 
      name: 'Azure Pipelines'
    strategy:
      matrix:
        ${{ each region in split('test1,test2,test3', ',')}}:
          ${{region}}:
            REGION: ${{region}}
    steps:
    - checkout: none
    - task: Bash@3
      displayName: "print deploy variables"
      continueOnError: false
      inputs:
        targetType: 'inline'
        script: |
          # Print Variables
          echo "AZURE_SUBSCRIPTION::= $(AZURE_SUBSCRIPTION)"
          echo "AZURE_APPNAME::= $(AZURE_APPNAME)"
          echo "AZURE_APP_REGIONS::= $(AZURE_APP_REGIONS)"
          echo "AZURE_APP_SLOT::= $(AZURE_APP_SLOT)"
          echo "IMG_NAME::= $(IMG_NAME)"
          echo "IMG_TAG::= $(IMG_TAG)"
          echo: "REGION::= $(region)"
    - task: AzureWebAppContainer@1
      displayName: "Deploy to $(REGION)"
      continueOnError: false
      inputs:
        azureSubscription: $(AZURE_SUBSCRIPTION)
        appName: $(AZURE_APPNAME)-$(REGION)
        imageName: $(IMG_NAME):$(IMG_TAG)
        deployToSlotOrASE: true
        slotName: $(AZURE_APP_SLOT)
        appSettings:
          -WEBSITES_PORT 8003
          -NODE_ENV $(NODE_ENV)

it works. (test1, test2, test3 is splitted)

parameters:
  - name: NODE_ENV
    type: string
  - name: IMG_NAME
    type: string
  - name: IMG_TAG
    type: string
  - name: AZURE_APP_SLOT
    type: string
    # Likes ase,brs,cnc
  - name: AZURE_APP_REGIONS
    type: string

jobs:
  - job: deploy_service_to_slot
    pool: 
      name: 'Azure Pipelines'
    strategy:
      matrix:
        ${{ each region in split(parameters.AZURE_APP_REGIONS, ',')}}:
          ${{region}}:
            REGION: ${{region}}
    steps:
    - checkout: none
    - task: Bash@3
      displayName: "print deploy variables"
      continueOnError: false
      inputs:
        targetType: 'inline'
        script: |
          # Print Variables
          echo "AZURE_SUBSCRIPTION::= $(AZURE_SUBSCRIPTION)"
          echo "AZURE_APPNAME::= $(AZURE_APPNAME)"
          echo "AZURE_APP_REGIONS::= $(AZURE_APP_REGIONS)"
          echo "AZURE_APP_SLOT::= $(AZURE_APP_SLOT)"
          echo "IMG_NAME::= $(IMG_NAME)"
          echo "IMG_TAG::= $(IMG_TAG)"
          echo: "REGION::= $(region)"
    - task: AzureWebAppContainer@1
      displayName: "Deploy to $(REGION)"
      continueOnError: false
      inputs:
        azureSubscription: $(AZURE_SUBSCRIPTION)
        appName: $(AZURE_APPNAME)-$(REGION)
        imageName: $(IMG_NAME):$(IMG_TAG)
        deployToSlotOrASE: true
        slotName: $(AZURE_APP_SLOT)
        appSettings:
          -WEBSITES_PORT 8003
          -NODE_ENV $(NODE_ENV)

parameters.AZURE_APP_REGIONS is doesnt work. it is not splitted.

Versions

Version Dev19.M237.2 (AzureDevOps_M237_20240408.14)

Environment type (Please select at least one enviroment where you face this issue)

• Self-Hosted
• Microsoft Hosted
• VMSS Pool
• Container

Azure DevOps Server type

dev.azure.com (formerly visualstudio.com)

Azure DevOps Server Version (if applicable)

No response

Operation system

No response

Version controll system

No response

Relevant log output

No response

[Cogi]

https://stackoverflow.com/questions/74393263/azure-pipeline-parameter-split-doesnt-work

[Cogi]

And it can be resolved like belows.
https://stackoverflow.com/questions/70738819/how-to-give-to-the-strategy-matrix-a-dynamic-object-based-on-the-current-filenam

just use runtime syntax. " $[ ] "

simple example.

jobs:
  # Start Set Variables
  - job: SetVar
    pool:
      name: 'Azure Pipelines'
    steps:
    - checkout: none
    - task: Bash@3
      displayName: "Set pipeline runtime variables"
      continueOnError: false
      inputs:
        targetType: 'inline'
        script: |
          # Set Runtime Variables
          # These Variables are pipeline variable, you have to use like $(some) instead of $some
          #
          echo "##vso[task.setvariable variable=azureRegionsMatrixObj;isOutput=true]$(AZURE_APP_REGIONS)"
      name: outputVar
  # End Set Variables
  - job: deploy_service_to_slot
    dependsOn: SetVar
    pool: 
      name: 'Azure Pipelines'
    strategy:
      matrix: $[ dependencies.SetVar.outputs['outputVar.azureRegionsMatrixObj'] ]
    steps:
    - checkout: none
    - task: Bash@3
      displayName: "print deploy variables"
      continueOnError: false
      inputs:
        targetType: 'inline'
        script: |
          # Print Variables
          echo "AZURE_SUBSCRIPTION::= $(AZURE_SUBSCRIPTION)"
          echo "AZURE_APPNAME::= $(AZURE_APPNAME)"
          echo "AZURE_APP_SLOT::= $(AZURE_APP_SLOT)"
          echo "IMG_NAME::= $(IMG_NAME)"
          echo "IMG_TAG::= $(IMG_TAG)"
          echo "REGION::= $(region)"
    - task: AzureWebAppContainer@1
      displayName: "Deploy to $(REGION)"
      continueOnError: false
      inputs:
        azureSubscription: $(AZURE_SUBSCRIPTION)
        appName: $(AZURE_APPNAME)-$(REGION)
        imageName: $(IMG_NAME):$(IMG_TAG)
        deployToSlotOrASE: true
        slotName: $(AZURE_APP_SLOT)