title: Using Gitversiontask in VS2017 on feature gitflow branch, revision not incrementing
body: <p>I'm pretty new on all <strong>AZURE devops</strong>.</p>
  
  <p>I did just the minimal install on my VS solution, nuget <strong>Gitversiontask</strong> in my solution, push to Azure Git pipeline and it worked with the development branch.</p>
  
  <p>I created ( <strong>GitFLOW</strong>) a <strong>feature</strong> named dostuff.
  Made some changes on classes, then commit &amp; push...
  Version feature/my-app 6.1.0-dostuff0001came out ...Nuget pack and push... all fine.</p>
  
  <p>Then did an another commit, pipeline start but at <strong>Nuget Push</strong> to artifacts ...<strong>ERROR 409</strong> (Conflict - The feed already contains 'my-app 6.1.0-dostuff0001).</p>
  
  <p><a href="https://i.stack.imgur.com/l5FJN.png" rel="nofollow noreferrer">pipeline</a></p>
  
  <pre><code>- task: NuGetCommand@2
    displayName: 'restore WinFormExtC.sln'
    inputs:
      restoreSolution: WinFormExtC/ActiveFramework.WinFormExtC.sln
      feedsToUse: config
      nugetConfigPath: NuGet/NuGet.Config
  
  steps:
  - task: VSBuild@1
    displayName: 'Build solution WinFormExtC'
    inputs:
      solution: WinFormExtC/ActiveFramework.WinFormExtC.sln
      platform: '$(BuildPlatform)'
      configuration: '$(BuildConfiguration)'
  
  steps:
  - task: NuGetCommand@2
    displayName: 'NuGet pack WinFormExtC'
    inputs:
      command: pack
      packagesToPack: WinFormExtC/Package.nuspec
      versioningScheme: byEnvVar
      versionEnvVar: GitVersion.NuGetVersion
      includeSymbols: true
  
  Your build pipeline references an undefined variable named ‘Parameters.searchPatternPush’. Create or edit the build pipeline for this YAML file, define the variable on the Variables tab. See https://go.microsoft.com/fwlink/?linkid=865972
  
  steps:
  - task: NuGetCommand@2
    displayName: 'NuGet push'
    inputs:
      command: push
      packagesToPush: '$(Parameters.searchPatternPush)'
      publishVstsFeed: '505cb4b9-0633-4d83-b4b6-1e5fc7ad020f'
  
  </code></pre>
  
  <p>Question: How can I get the my-app 6.1.0-dostuff0001 increase or change when I queue the pipeline in Azure devops and the build task increment the version of feature branch?</p>
  
  <p>Please remember that I'm new to all this Build, yml, config etc. concept.</p>