diff --git a/eng/common/post-build/setup-maestro-vars.ps1 b/eng/common/post-build/setup-maestro-vars.ps1
new file mode 100644
index 00000000000..d7f64dc63cb
--- /dev/null
+++ b/eng/common/post-build/setup-maestro-vars.ps1
@@ -0,0 +1,26 @@
+param(
+  [Parameter(Mandatory=$true)][string] $ReleaseConfigsPath            # Full path to ReleaseConfigs.txt asset
+)
+
+. $PSScriptRoot\post-build-utils.ps1
+
+try {
+  $Content = Get-Content $ReleaseConfigsPath
+  
+  $BarId = $Content | Select -Index 0
+  
+  $Channels = ""            
+  $Content | Select -Index 1 | ForEach-Object { $Channels += "$_ ," }
+  
+  $IsStableBuild = $Content | Select -Index 2
+
+  Write-PipelineSetVariable -Name 'BARBuildId' -Value $BarId
+  Write-PipelineSetVariable -Name 'InitialChannels' -Value "$Channels"
+  Write-PipelineSetVariable -Name 'IsStableBuild' -Value $IsStableBuild
+}
+catch {
+  Write-Host $_
+  Write-Host $_.Exception
+  Write-Host $_.ScriptStackTrace
+  ExitWithExitCode 1
+}