# Errors with FlexBuilder 3

**URL:** <https://forum.kirupa.com/t/errors-with-flexbuilder-3/292599>\
**Category:** flash\
**Created:** [July 16, 2009, 8:14am UTC](https://forum.kirupa.com/t/errors-with-flexbuilder-3/292599 "2009-07-16T08:14:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Eichen](https://avatars.discourse-cdn.com/v4/letter/e/c67d28/32.png) [@Eichen](https://forum.kirupa.com/u/Eichen)\
**Post date:** [July 16, 2009, 8:14am UTC](https://forum.kirupa.com/t/errors-with-flexbuilder-3/292599/1 "2009-07-16T08:14:57Z")

</div>

Hi!

I have .fla called Helicopter and a movieclip in the library with a linkage of Fly. If I use the code-snippet (as a seperate class called Helicopter.as) below with Flash or Flashdeveloper it works fine. If i use FlexBuilder (Actionscript project)I get these errors. Does anyone know why?  
Is there some settings I have to change in FlexBuilder?

Severity and Description Path Resource Location Creation Time Id  
1046: Type was not found or was not a compile-time constant: Fly. Helicopter/src Helicopter.as line 7 1247730594859 770

Severity and Description Path Resource Location Creation Time Id  
1180: Call to a possibly undefined method Fly. Helicopter/src Helicopter.as line 7 1247730594868 771

Severity and Description Path Resource Location Creation Time Id  
1180: Call to a possibly undefined method Fly. Helicopter/src Helicopter.as line 7 1247730594869 772

//--------------------------------------------//  
package {  
import flash.display.Sprite;

```
public class Helicopter extends Sprite
{
    
    private var f:Fly = new Fly();
    
    public function Helicopter()
    {
        
        addChild(f);
        
    }
}

```

}