Env spec?

Author: zooba

ci/release.yml

@@ -142,9 +142,9 @@ stages:
           scriptType: 'ps'
           scriptLocation: 'inlineScript'
           inlineScript: |
-            "##vso[task.setvariable variable=AZURE_CLIENT_ID;issecret=true]$servicePrincipalId" 
-            "##vso[task.setvariable variable=AZURE_ID_TOKEN;issecret=true]$idToken"
-            "##vso[task.setvariable variable=AZURE_TENANT_ID;issecret=true]$tenantId"
+            "##vso[task.setvariable variable=AZURE_CLIENT_ID;issecret=true]${env:servicePrincipalId}" 
+            "##vso[task.setvariable variable=AZURE_ID_TOKEN;issecret=true]${env:idToken}"
+            "##vso[task.setvariable variable=AZURE_TENANT_ID;issecret=true]${env:tenantId}"
           addSpnToEnvironment: true
 
       - powershell: >