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Steps to reproduce:
1. Enter a binding expression which includes a logical operator in MXML e.g.

<mx:Button enabled="{!this.model.user.authorized && this.creditCardForm.valid}"/>

 Actual Results:

The compiler raises the following error:-

"The entity name must immediately follow the '&' in the entity reference."
 
 Expected Results:

You would expect logical operators to be valid inside {} otherwise you'd expect the documentation at least to say they were not valid.
 
 Workaround (if any):
 
Wrap the logical expression in a function and call the function from the binding expression e.g.

 <mx:Button enabled="{this.logicalAnd(!this.model.user.authorized, this.creditCardForm.valid)}"/>

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Steps to reproduce: 1. Enter a binding expression which includes a logical operator in MXML e.g. <mx:Button enabled="{!this.model.user.authorized && this.creditCardForm.valid}"/>  Actual Results: The compiler raises the following error:- "The entity name must immediately follow the '&' in the entity reference."    Expected Results: You would expect logical operators to be valid inside {} otherwise you'd expect the documentation at least to say they were not valid.    Workaround (if any):   Wrap the logical expression in a function and call the function from the binding expression e.g.  <mx:Button enabled="{this.logicalAnd(!this.model.user.authorized, this.creditCardForm.valid)}"/>