Need help with error msg 1120: Access of undefined property

Question

I am not a coder, so I need coding help. Any help would be greatly appreciated.
I'm doing a Flash banner that has clickTAG instructions from Google. The code they said to put on the button is:
ClickTAG parameter code for ActionScript 3:
import flash.events.MouseEvent;
import flash.net.URLRequest;
someButton_or_displayObject_to_receive_mouseClick.addEventListener(
      MouseEvent.CLICK,
      function(event: MouseEvent) : void {
      flash.net.navigateToURL(new URLRequest( root.loaderInfo.parameters.clickTAG), "_blank");
Replace someButton_or_displayObject_to_receive_mouseClick with the actual name of button that will receive the click.
Note that it's not necessary to specify the destination URL for the ad anywhere in this code; this is taken care of through the usage of clickTAG. Also, depending on the structure of your Flash ad, it may be necessary to prepend "_root." or "_level0." to "clickTAG" above, resulting in "_root.clickTAG" or "_level0.clickTAG". It is strongly recommended to upload the ad into your account and verify that the ad is behaving normally prior to it going live, allowing time for any necessary changes.
And this is the code I put in (btnClickTag is the name of my button):
import flash.events.MouseEvent;
import flash.net.URLRequest;
btnClickTag.addEventListener(
      MouseEvent.CLICK,
      function(event: MouseEvent) : void {
      flash.net.navigateToURL(new URLRequest( root.loaderInfo.parameters.clickTAG), "_blank");
and this is the error I got:
Scene1, Layer 'actions', Frame 1, 1120: Access of undefined property btnClickTag. btnClickTag.addEventListener(

Answer 1

First, make sure you have assigned that name to the button via the properties panel, then, be sure to adjust the code so that it is not spread out over several lines... normally it needs to be on one line.  You should not nest the function in the event listener either, so try the following (no need for the import statements)...
btnClickTag.addEventListener(MouseEvent.CLICK, tagClick);
function tagClick(event:MouseEvent):void {
      navigateToURL(new URLRequest( root.loaderInfo.parameters.clickTAG), "_blank");