[antlr-interest] is a non unique reference - error when trying to fix

[Hed Bar-Nissan]

I get on this:*
question:    'question:' WS    SENTANCE ';;' WS
        'answer:'  WS    SENTANCE ';;'
    {System.out.print("Question is" + $SENTANCE.getText() + ", Answer is " +
$SENTANCE.getText());} ;*

SENTANCE is a non unique reference which is fair,

but when i try to fix like i found here:
http://www.antlr.org/pipermail/antlr-interest/2008-April/027854.html*
    {System.out.print("Question is" + $SENTANCE1.getText() + ", Answer is "
+ $SENTANCE2.getText());} ;
*
Generation succeeds but i get a compilation error because these lines are
not generated:
Token SENTANCE1=(Token)input.LT(1);

A bug or misuse?

Thanks
Hed
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