-${user_name} basic_15_test_user
-${user_password} Basic_15_user_pass
-${user_new_password} Basic_15_new_pass
-${user_role} project_user
-${user_project} admin
-${project_name} basic_15_test_project
-${new_project_name} basic_15_project_test
-${role_name} test_role
-${success_return_code} 0
+${USERNAME} basic_15_test_user
+${USER_PASSWORD} Basic_15_user_pass
+${USER_NEW_PASSWORD} Basic_15_new_pass
+${USER_ROLE} project_user
+${USER_PROJECT} admin
+${PROJECT_NAME} basic_15_test_project
+${NEW_PROJECT_NAME} basic_15_project_test
+${ROLE_NAME} test_role
+${SUCCESS_RETURN_CODE} 0