diff --git a/modules/basic-theme/test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/azure-pipelines.yml b/modules/basic-theme/test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/azure-pipelines.yml
index b4933160b0..7ace2e891a 100644
--- a/modules/basic-theme/test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/azure-pipelines.yml
+++ b/modules/basic-theme/test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/azure-pipelines.yml
@@ -37,7 +37,7 @@ stages:
     - checkout: devops
 
     - script: |
-        cd ${bootstrapTaghelpersDir} && dotnet publish -c Release -o bin/Release/publish
+        cd $(bootstrapTaghelpersDir) && dotnet publish -c Release -o bin/Release/publish
 
     - task: Docker@2
       displayName: Build Image