Class not found

[dumfuck]

I was following along the haxe flixel guide for the hud creation on the tutorial game. I am currently using this piece of code for a hud

package;

import flixel.FlxBasic;
import flixel.FlxG;
import flixel.FlxSprite;
import flixel.group.FlxGroup;
import flixel.text.FlxText;
import flixel.util.FlxColor;
using flixel.util.FlxSpriteUtil;



class HUD extends FlxTypedGroup<FlxSprite>
{
    public var viewerText:FlxText;

   
    public function new(viewers)
    {
        super();
        viewerText = viewers;
    }
   
}

When I test the program however I run into class not found: FlxTypedGroup. I can't seem to tell what is wrong with this code.

This is where I am creating my class.

package;

import flixel.FlxG;
import flixel.FlxSprite;
import flixel.FlxState;
import flixel.text.FlxText;
import flixel.ui.FlxButton;
import flixel.util.FlxMath;
import flixel.util.FlxColor;


/**
 * A FlxState which can be used for the actual gameplay.
 */
class PlayState extends FlxState
{
    private var viewers:Int = 0;
   
    /**
     * Function that is called up when to state is created to set it up.
     */
    override public function create():Void
    {
        viewers = 10;
        var hudtoadd = new HUD(new FlxText(10,10,500, viewers));
        //add(hudtoadd);
        //add(hudtoadd.viewerText);
        super.create();
    }
   
    /**
     * Function that is called when this state is destroyed - you might want to
     * consider setting all objects this state uses to null to help garbage collection.
     */
    override public function destroy():Void
    {
        super.destroy();
    }

    /**
     * Function that is called once every frame.
     */
    override public function update():Void
    {
        super.update();
    }    
}

[Gama11]

You only import FlxGroup, not FlxTypedGroup. You need:

import flixel.group.FlxTypedGroup;

in HUD.hx.

[dumfuck]

Yup thats it. Woops! Thanks a lot.