Tapestry, determine if form has errors in tml

I have a text in a f开发者_如何学Corm that I want to hide if the form has errors and replace it with the error message. How do i determine in the tml that the current form has an error?

Tx

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You can inject your form in your java with the @Component annotation, and use the getHasError method. Then you can use this result with the "if" component.

Manu