Set text in a label - apache-flex

Question

This should be super simple but I can't for the life of me seem to get it to just set the text of a label at run time. It throws "1120: Access of undefined property lbl_param"
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
width="398" height="85" minWidth="398" minHeight="85">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:Label id="lbl_param" x="19" y="10" width="105" height="29" text="Paramaters: "/>
<fx:Script>
<![CDATA[
lbl_param.text = "test113";
]]>
</fx:Script>
</s:Application>

Answer 1

Your code to set the lbl_param.text should be in a method: The only code in a script block you can run outside of a method is a class import or a variable definition. This sample puts the code in a initialize event hander:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
width="398" height="85" minWidth="398" minHeight="85" initialize="init()">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:Label id="lbl_param" x="19" y="10" width="105" height="29" text="Paramaters: "/>
<fx:Script>
<![CDATA[
public function init():void{
lbl_param.text = "test113";
}
]]>
</fx:Script></s:Application>
Disclaimer: I wrote this code in the browser and it may not be "compiler" perfect.