diff --git a/BmsApp.py b/BmsApp.py
index 679ff8e..0fa29fe 100644
--- a/BmsApp.py
+++ b/BmsApp.py
@@ -96,6 +96,10 @@ class Controller:
         pub.subscribe(self.model.start_can, "view.start")
         pub.subscribe(self.model.stop_can, "view.stop")
 
+        pub.subscribe (self.view.update_battery_module_grid, "bms.module.update")
+
+        pub.subscribe (self.model.setter, "view.id_selector")
+
 
 class PmgrowBms:
     def __init__(self, add_printer=True):
@@ -104,6 +108,11 @@ class PmgrowBms:
         self.notifier = None
         self.listeners = [can.Printer()] if add_printer else []
         self.listeners.append(BmsListener(self))
+        self.master_id = 0x02
+
+    def setter (self, id):
+        print ("updating master id")
+        self.master_id = id
 
     @property
     def bms_id (self):
@@ -129,9 +138,8 @@ class PmgrowBms:
         full_id = (msg_prefix, master_id, msg_type)
         db_msg = db.get_message_by_frame_id(msg.arbitration_id)
 
-        id_chosen = int(self.choice_1.GetStringSelection(), 16)
-
-        if master_id == id_chosen:
+        print(master_id, self.master_id)
+        if master_id == self.master_id:
             if find_category(full_id, 0) == BMS_MSG_CAT.MODULE_DATA:
                 try:
                     decoded = db.decode_message(msg.arbitration_id, msg.data)
@@ -206,8 +214,6 @@ class BmsMonitorView(BmsMonitorFrame):
                     if cat in pgrid_category:
                         self.property_grid_page_info.AppendIn(cat.name, prop)
 
-        pub.subscribe (self.update_battery_module_grid, "bms.module.update")
-
     def GetModuleVoltage(self, module_dict):
         keyString = 'BatS_Cell{}_V'
         return [module_dict.get(keyString.format(x), -1) for x in range(nCell)]
@@ -218,12 +224,19 @@ class BmsMonitorView(BmsMonitorFrame):
 
     def update_battery_module_grid(self, state):
         i_module = self.spin_ctrl_1.GetValue()
-        module_dict = self.state[i_module]
+        module_dict = state[i_module]
         voltages = self.GetModuleVoltage(module_dict)
         bal_states = self.GetModuleBalState(module_dict)
         for i in range(nCell):
             self.grid_1.SetCellValue(i, 0, str(voltages[i]))
             self.grid_1.SetCellValue(i, 2, str(bal_states[i]))
+        self.grid_1.ForceRefresh()
+
+    def OnIdChoice(self, event):
+        print ("sending update request")
+        pub.sendMessage("view.id_selector", id=int(self.choice_1.GetStringSelection(), 16))
+
+        event.Skip()
 
     def OnToggle(self, event):
         if self.button_1.Value:
diff --git a/BmsView.py b/BmsView.py
index 80c50a8..6a6a984 100644
--- a/BmsView.py
+++ b/BmsView.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: UTF-8 -*-
 #
-# generated by wxGlade 0.9.6 on Thu Aug  6 14:36:04 2020
+# generated by wxGlade 0.9.6 on Tue Aug 11 19:12:46 2020
 #
 
 import wx
@@ -35,6 +35,7 @@ class BmsMonitorFrame(wx.Frame):
         self.__do_layout()
 
         self.Bind(wx.EVT_TOGGLEBUTTON, self.OnToggle, self.button_1)
+        self.Bind(wx.EVT_CHOICE, self.OnIdChoice, self.choice_1)
         # end wxGlade
 
     def __set_properties(self):
@@ -106,6 +107,10 @@ class BmsMonitorFrame(wx.Frame):
         print("Event handler 'OnToggle' not implemented!")
         event.Skip()
 
+    def OnIdChoice(self, event):  # wxGlade: BmsMonitorFrame.<event_handler>
+        print("Event handler 'OnIdChoice' not implemented!")
+        event.Skip()
+
 # end of class BmsMonitorFrame
 
 class BmsApp(wx.App):
diff --git a/BmsView.wxg b/BmsView.wxg
index 4e372a6..9c99786 100644
--- a/BmsView.wxg
+++ b/BmsView.wxg
@@ -1,5 +1,5 @@
 <?xml version="1.0"?>
-<!-- generated by wxGlade 0.9.6 on Thu Aug  6 14:36:03 2020 -->
+<!-- generated by wxGlade 0.9.6 on Tue Aug 11 19:12:43 2020 -->
 
 <application class="BmsApp" encoding="UTF-8" for_version="3.0" header_extension=".h" indent_amount="4" indent_symbol="space" is_template="0" language="python" mark_blocks="1" name="app" option="0" overwrite="1" path="./BmsView.py" source_extension=".cpp" top_window="frame" use_gettext="1" use_new_namespace="1">
     <object class="BmsMonitorFrame" name="frame" base="EditFrame">
@@ -91,6 +91,9 @@
                                 <option>0</option>
                                 <border>0</border>
                                 <object class="wxChoice" name="choice_1" base="EditChoice">
+                                    <events>
+                                        <handler event="EVT_CHOICE">OnIdChoice</handler>
+                                    </events>
                                     <selection>0</selection>
                                     <choices>
                                         <choice>0x02</choice>