1120: Undefined Property Error even though I'm it's the correct instance name

[kenrbgain]

stop();

start_btn.addEventListener(MouseEvent.CLICK, playGame);

function playGame (event:MouseEvent): void {

gotoAndStop ("gameplay");

}

Here is the code that I made for a true or false game. So, there is a button named start_btn, and its showing the error. I don't know how to move forward when I double-checked the instance name many times.

[JoãoCésar]

Hi.

Can you show a picture of your instance selected on stage along with the Properties panel open?

Regards,

JC

[kglad]

copy your code name and paste into the instance name field of the object that must exist when that code executes.