update

Author: dingmeng-xue

.azure-pipelines/util/smoke-test-steps.yml

@@ -14,7 +14,7 @@ jobs:
 
   steps:
   - task: UseDotNet@2
-    condition: ne(${{ parameters.netCoreVersion }}, '')
+    condition: ne(variables['netCoreVersion'], '')
     displayName: 'Prepare .NET Core ${{ parameters.netCoreVersion }}'
     inputs:
       packageType: sdk