diff --git a/src/user_code.cpp b/src/user_code.cpp
index 6272b03..74b10eb 100644
--- a/src/user_code.cpp
+++ b/src/user_code.cpp
@@ -1,19 +1,19 @@
 #include <user_code.hpp>
 
-
 ESPMega_Timer timer1(0, 50, timer1_callback, 15001);
 
-//Display Componets
+// Display Componets
+// Link with Dual state button object with id 2 on page 1 named bt0
 NexDSButton bt0 = NexDSButton(1, 2, "bt0");
-NexTouch *nex_listen_list[] = 
-{
-    &bt0,
-    NULL
-};
+// List of Component ID Message to listen to
+NexTouch *nex_listen_list[] =
+    {
+        &bt0,
+        NULL};
 
 void bt0PopCallback(void *ptr)
 {
-    Serial.println("BTN0!");
+    pwm_toggle(2);
 }
 
 /*
@@ -46,7 +46,6 @@ void user_loop()
     nexLoop(nex_listen_list);
 }
 
-
 /*
 This code will run when an input pin changed state
 */
@@ -56,6 +55,11 @@ void virtual_interrupt_user_callback(int pin, int state)
 
 void pwm_changed_user_callback(int pin)
 {
+    if (pin == 2)
+    {
+        // inform the lcd when pwm 2 changed
+        bt0.setValue(pwm_get_state(2));
+    }
 }
 
 /*