diff --git a/OlivOS/nativeWinUIAPI.py b/OlivOS/nativeWinUIAPI.py
index 28de21ea..1ae62834 100644
--- a/OlivOS/nativeWinUIAPI.py
+++ b/OlivOS/nativeWinUIAPI.py
@@ -1998,6 +1998,7 @@ def resFunc():
                     )
                 return resFunc
 
+            self.init_style()
             self.root_Checkbutton_init(
                 obj_root='root',
                 obj_name='root_checkbutton_flag_group',
@@ -2135,6 +2136,17 @@ def root_Button_init(self, name, text, command, x, y, width, height):
                 height=height
             )
 
+        def init_style(self):
+            self.UIData['style'] = ttk.Style(self.UIObject['root'])
+            self.UIData['style'].configure(
+                "TCheckbutton",
+                indicatorbackground=self.UIConfig['color_001'],
+                indicatorforeground=self.UIConfig['color_004'],
+                background=self.UIConfig['color_001'],
+                foreground=self.UIConfig['color_004']
+            )
+            #self.UIData['style'].map("TCheckbutton", background=[("active", "darkgrey")])
+
         def root_Checkbutton_init(self, obj_root, obj_name, str_name, x, y, width_t, width, height, action, title=''):
             self.UIObject[obj_name + '=Label'] = tkinter.Label(
                 self.UIObject[obj_root],
@@ -2159,8 +2171,7 @@ def root_Checkbutton_init(self, obj_root, obj_name, str_name, x, y, width_t, wid
                 variable=self.UIData[str_name],
                 onvalue=True,
                 offvalue=False,
-
-                # command=action
+                style='TCheckbutton'
             )
             # self.UIObject[obj_name].configure(
             #     bg=self.UIConfig['color_001'],
diff --git a/OlivOS/virtualTerminalSDK.py b/OlivOS/virtualTerminalSDK.py
index f6557deb..60fe3b8b 100644
--- a/OlivOS/virtualTerminalSDK.py
+++ b/OlivOS/virtualTerminalSDK.py
@@ -125,7 +125,8 @@ def get_Event_from_SDK(target_event):
             target_event.data.sender['name'] = tmp_user_conf["user_name"]
             target_event.data.sender['sex'] = 'unknown'
             target_event.data.sender['age'] = 0
-            if tmp_user_conf["flag_group"]:
+            if tmp_user_conf["flag_group"] \
+            and 'unknown' != tmp_user_conf["group_role"]:
                 target_event.data.sender['role'] = tmp_user_conf["group_role"]
             target_event.data.host_id = None
     elif target_event.platform['model'] in ['postapi', 'ff14']: