Azure DevOps pipelines increment Version update variable groups of library

         Very often needed save build number after increment and more often this is new save not in git. I find save in  variable groups of library Azure DevOps. You cat use very good plugin from marketplace  link

And after that use it in your pipelines:

In your library you have:

You Have to generate Azure PAT  link

Example Pipeline:

• 
  pool: #CentOS
    vmImage: 'ubuntu-latest'
  
  variables:
  - group: buildsENV
  - name: BuildDemo
    value: $[variables.demo_build] # uses runtime expression
  
  stages:
  ##################################################
  - stage: BuildUIimage
    displayName: Build UI image
    jobs:
    - job: BuildUI
      displayName: BuildUI
      steps:
      - task: Bash@3
        displayName: IncrementVar
        name: IncrementVar
        inputs:
          targetType: 'inline'
          script: |
            echo "-------------------------------------------------------"
            echo $(demo_build) # uses macro syntax
            echo $(BuildDemo) 
      - task: ManageVariableGroupTask@0
        inputs:
          pat: '***********************************'
          project: 'test-elg'
          vgname: 'buildsENV'
          orgname: 'KSI-elg'
          op: 'Update'
          varops: |
            = dev_build => "155"
            + dev_build_addd => "155"
             - sandbox_build