Extending the TextField class

programming flash
1

Hey guys,
This is my first post on Kirupa.

Basically the issue I am having is related to the TextField class. I was hoping to create a custom textField class which would allow me to specify the x and y positions of the textField upon creating it.

However in trying I received numerous errors. Below is my code.

AS file

package
{
    import flash.text.TextField;
    
    public class TextBox extends TextField
    {
        //variables
        var textBox:TextField = new TextField();
        var xPosition:Number;
        var yPosition:Number;
        
        
        public function TextBox(xPos:Number, yPos:Number)
        {
            textBox.xPosition = xPos;
            textBox.yPosition = yPos;
        }
        
        
        public function setXPosition(xPos:Number):void
        {
            textBox.xPosition = xPos;
        
        }
        
    }
}

FLA file

var tb:TextBox = new TextBox(30, 30);

When I run I get this error…

1119: Access of possibly undefined property xPosition through a reference with static type flash.text:TextField.

I would appriciate any help on the matter, Im new to the whole concept of OOP.

Regards,
jack