[flexcoders] My first Actionscript 3.0 program on Flex 2

[siby158]

I am new to AS 3.0 so I created a simple program to add two numbers and 
display the total but I am not able to get it working. 

Example:
Addition.as - ActionScript file
public function Addition():void
{
 var a:Number = firstnumber.text;
 var b:Number = secondnumber.text;
 totalnumber.text = (a + b);
}

The problem is: Implicit coercion of a value of type String to an 
unrelated type Number.

Thank you for any kind of help!