Enter more then 10 character in the email and rollover the textinput :)
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
layout="absolute">
<mx:XMLList id="employees">
<employee>
<name>Christina Coenraets</name>
<email>[EMAIL PROTECTED]</email>
</employee>
</mx:XMLList>
<mx:Component id="actionbt" >
<mx:TextInput text="" creationComplete="doInit()">
<mx:Script>
<![CDATA[
import mx.validators.StringValidator;
public var validator:StringValidator= new
StringValidator();
private function doInit():void {
validator.source= this
validator.maxLength=10
validator.property="text";
validator.trigger=this;
validator.triggerEvent ="change";
validator.validate();
}
]]>
</mx:Script>
</mx:TextInput>
</mx:Component>
<mx:DataGrid id="dg" y="200" editable="true" width="100%"
height="100%" rowCount="5" dataProvider="{employees}">
<mx:columns>
<mx:DataGridColumn dataField="name" headerText="Name"/>
<mx:DataGridColumn dataField="email" headerText="Email"
itemEditor="{actionbt}"/>
</mx:columns>
</mx:DataGrid>
</mx:Application>
