diff --git a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
index d80c6841..a6ca7246 100644
--- a/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
+++ b/examples/postman_echo/request_methods/demo_testsuite_yml/request_with_functions_test.py
@@ -57,7 +57,7 @@ class TestCaseRequestWithFunctions(HttpRunner):
             .assert_equal("status_code", 200)
             .assert_equal(
                 "body.data",
-                "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar21.",
+                "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar32.",
             )
             .assert_type_match("body.json", "None")
             .assert_type_match("body.json", "NoneType")
diff --git a/examples/postman_echo/request_methods/request_with_functions.yml b/examples/postman_echo/request_methods/request_with_functions.yml
index 36ab12b5..98007e79 100644
--- a/examples/postman_echo/request_methods/request_with_functions.yml
+++ b/examples/postman_echo/request_methods/request_with_functions.yml
@@ -47,7 +47,7 @@ teststeps:
         data: "This is expected to be sent back as part of response body: $foo1-$foo2-$foo3."
     validate:
         - eq: ["status_code", 200]
-        - eq: ["body.data", "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar21."]
+        - eq: ["body.data", "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar32."]
         - type_match: ["body.json", None]
         - type_match: ["body.json", NoneType]
         - type_match: ["body.json", null]
diff --git a/examples/postman_echo/request_methods/request_with_functions_test.py b/examples/postman_echo/request_methods/request_with_functions_test.py
index 6ab4cca9..9c71f8e7 100644
--- a/examples/postman_echo/request_methods/request_with_functions_test.py
+++ b/examples/postman_echo/request_methods/request_with_functions_test.py
@@ -57,7 +57,7 @@ class TestCaseRequestWithFunctions(HttpRunner):
             .assert_equal("status_code", 200)
             .assert_equal(
                 "body.data",
-                "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar21.",
+                "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar32.",
             )
             .assert_type_match("body.json", "None")
             .assert_type_match("body.json", "NoneType")
diff --git a/examples/postman_echo/request_methods/request_with_variables.yml b/examples/postman_echo/request_methods/request_with_variables.yml
index 14196a5f..34c84778 100644
--- a/examples/postman_echo/request_methods/request_with_variables.yml
+++ b/examples/postman_echo/request_methods/request_with_variables.yml
@@ -38,7 +38,7 @@ teststeps:
         data: "This is expected to be sent back as part of response body: $foo1-$foo2-$foo3."
     validate:
         - eq: ["status_code", 200]
-        - eq: ["body.data", "This is expected to be sent back as part of response body: bar12-testcase_config_bar2-bar21."]
+        - eq: ["body.data", "This is expected to be sent back as part of response body: bar12-testcase_config_bar2-bar32."]
 -
     name: post form data
     variables:
diff --git a/examples/postman_echo/request_methods/request_with_variables_test.py b/examples/postman_echo/request_methods/request_with_variables_test.py
index 63a82d74..d3e7f954 100644
--- a/examples/postman_echo/request_methods/request_with_variables_test.py
+++ b/examples/postman_echo/request_methods/request_with_variables_test.py
@@ -42,7 +42,7 @@ class TestCaseRequestWithVariables(HttpRunner):
             .assert_equal("status_code", 200)
             .assert_equal(
                 "body.data",
-                "This is expected to be sent back as part of response body: bar12-testcase_config_bar2-bar21.",
+                "This is expected to be sent back as part of response body: bar12-testcase_config_bar2-bar32.",
             )
         ),
         Step(
diff --git a/httprunner/runner.py b/httprunner/runner.py
index edcfaae5..00a46f53 100644
--- a/httprunner/runner.py
+++ b/httprunner/runner.py
@@ -361,7 +361,7 @@ class HttpRunner(object):
             # save extracted variables to session variables
             extracted_variables.update(extract_mapping)
 
-        self.__session_variables.update(extract_mapping)
+        self.__session_variables.update(extracted_variables)
         self.__duration = time.time() - self.__start_at
         return self