access of undefined property. What undefined property?

access of undefined property variable01.
access of undefined property pattern.
I don't see a problem with the code, yet the error persists. I am using Flex Builder.

<?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"
               creationComplete="init(event);"
               minWidth="955" minHeight="600" backgroundColor="#cbd8e6">
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    <fx:Script>
        <![CDATA[
        var variable01:String;
        variable01 = "1";

        var pattern:RegExp;
        pattern = /^[0-9]{1,3}$/;

        pattern.test(variable01);
        ]]>
    </fx:Script>
</s:Application>
kadinAsked:
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kadinAuthor Commented:
I have learned from other sources the open variables variable01 and pattern must reside within an event handler like creationComplete="init(event);" .

public function init():void{                
                var variable01:String;
                variable01 = "1";
                var pattern:RegExp;
                pattern = /^[0-9]{1,3}$/;
                trace(pattern.test(variable01));
            }
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