Bind whole expression from Model to a Text control
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Model id="myModel"> <myModel> <d>{(isMale.selected) ? "Mr." : "Ms."}</d> </myModel> </mx:Model> <mx:Form> <mx:FormItem label="Select sex:"> <mx:RadioButton id="isMale" label="Male" groupName="gender" selected="true" /> <mx:RadioButton id="isFemale" label="Female" groupName="gender" /> </mx:FormItem> </mx:Form> <mx:Text text="{'Conditional: '+myModel.d}" /> </mx:Application>