diff --git a/.github/workflows/stage0.yml b/.github/workflows/stage0.yml
index a6e1171b..c185346e 100644
--- a/.github/workflows/stage0.yml
+++ b/.github/workflows/stage0.yml
@@ -33,8 +33,8 @@ jobs:
           echo "${{ matrix.os }}_OS_TAG=$OS_TAG" >>${GITHUB_ENV}
       - name: env VALUE
         run: |
-          echo ${{ env. }}${{ matrix.os }}_OS_NAME
-          echo ${{ env. }}${{ matrix.os }}_OS_TAG
+          ENV_NAME = env.${{ matrix.os }}_OS_NAME
+          echo ${{ ENV_NAME }}
           
       - name: Build and push Docker image
         uses: docker/build-push-action@v5