diff --git a/.github/workflows/GitFlow_Check-pull-request-source-branch.yml b/.github/workflows/GitFlow_Check-pull-request-source-branch.yml
index 86d9a928..495b3d50 100644
--- a/.github/workflows/GitFlow_Check-pull-request-source-branch.yml
+++ b/.github/workflows/GitFlow_Check-pull-request-source-branch.yml
@@ -34,10 +34,11 @@ jobs:
       # Step 1: Check branch pattern
       - name: Check branch pattern
         id: branch_check
+        env:
+          HEAD_REF: ${{ github.head_ref }}
+          BASE_REF: ${{ github.base_ref }}
         run: |
-          # Get branch information from context
-          HEAD_REF="${{ github.head_ref }}"
-          BASE_REF="${{ github.base_ref }}"
+          # Les variables sont maintenant définies dans l'environnement plutôt qu'injectées directement
           MAIN_BRANCH="${{ env.MAIN_BRANCH }}"
           VALID_PATTERN="${{ env.VALID_PATTERNS }}"
           
@@ -175,4 +176,4 @@ jobs:
               }
             } catch (error) {
               console.log(`Error in cleanup: ${error}`);
-            }
+            }
\ No newline at end of file