diff --git a/.azuredevops/pipelines/templates/publish-os-steps.yml b/.azuredevops/pipelines/templates/publish-os-steps.yml
index 733c2d2d7..9494ba75f 100644
--- a/.azuredevops/pipelines/templates/publish-os-steps.yml
+++ b/.azuredevops/pipelines/templates/publish-os-steps.yml
@@ -10,7 +10,7 @@ parameters:
 jobs:
 - job: Publish_${{ parameters.name }}
   pool: 
-    vmImage: ${vmImage}
+    vmImage: $(vmImage)
   steps:
 
   - task: DotNetCoreCLI@2