# List box in MX2004, button works, setChangeHandler doesn't

**URL:** <https://forum.kirupa.com/t/list-box-in-mx2004-button-works-setchangehandler-doesnt/65274>\
**Category:** Uncategorized\
**Created:** [September 24, 2004, 3:35pm UTC](https://forum.kirupa.com/t/list-box-in-mx2004-button-works-setchangehandler-doesnt/65274 "2004-09-24T15:35:54Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Sparky\_J](https://avatars.discourse-cdn.com/v4/letter/s/aeb1de/32.png) [@Sparky\_J](https://forum.kirupa.com/u/Sparky_J)\
**Post date:** [September 24, 2004, 3:35pm UTC](https://forum.kirupa.com/t/list-box-in-mx2004-button-works-setchangehandler-doesnt/65274/1 "2004-09-24T15:35:54Z")

</div>

I have this code on my actions frame:

```auto
function displayDetails(){
		display_box.text = drop_down_list.getSelectedItem().data;
	}
drop_down_list.setChangeHandler("displayDetails");

```

my listBox is named “drop\_down\_list” and my text field is named “display\_box”

I have a button with this code:

```auto
on (press) {
	displayDetails();
}

```

when I press the button it works, when I just change the drop down item, nothing happens. The code looks just like the code in the tutorial, so I’m lost here.

---

<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/6/2/621e5c11736f46532526e61be85940af4230f3e5.png) [@system](https://forum.kirupa.com/u/system)\
**Post date:** [September 24, 2004, 4:17pm UTC](https://forum.kirupa.com/t/list-box-in-mx2004-button-works-setchangehandler-doesnt/65274/2 "2004-09-24T16:17:56Z")

</div>

this worked:

```auto
this.onEnterFrame = function(){
		display_box.htmlText = listbox.getSelectedItem().data;
	}

```