Update reactive.md

docs/device/reactive.md

@@ -148,17 +148,18 @@ Through this example, we have seen that the micro:bit scheduler enables you to c
 As a result, you can easily add a new capability to the micro:bit by just adding a new subprogram. For example, if you want to add a reset feature to the counter program, all you need to do is add a new event handler for a press of button **B** that sets the global variable "count" to zero, as shown below:
 
 ```typescript
-function countButtonPressesWithReset() {
 let count = 0
+
 input.onButtonPressed(Button.A, () => {
     count = count + 1
 })
+
 basic.forever(() => {
     basic.showNumber(count)
 })
+
 input.onButtonPressed(Button.B, () => {
     count = 0
 })
-}
 ```