jsf - Bean method reading null property from xhtml -

I have read many posts in StaxHourFlow but I have not been able to implement the problem below.

The problem is: let me & lt; P: inputTextarea> There is a need to type some text in and clicking on the button I need to get this value in the bean method.

Ie:

  & lt; P: inputctactor binding = "# {input}" /> & lt; P: command button action = "# {pessoaMB.adicionarContato (input.value)}" instant = "true" /> With Bean Method   
:  
  Public Zero Additional Contatata (string value) {System.out.println (value); }   
 The code I am using gives me a  null  value.  
 I am using visual visibility @ and can not change it. First of all, note one side:  It's a bad practice to work with JSF components, you should work with models instead  that means Do not use  binding = "# {input}" , but paste it on  value = "# {bean.txt}" .  
 Secondly, I suspect that  instant = "true"  is used properly in your setup. When  UICommand  components like  & lt; H: commandButton & gt;  for the  skip  component, the JSF life cycle  immediately = "incorrect"  (or omitted, as it is default) , Thus their  value  will not be set at all. However, JSF still determines the  welcome submitted  behind the prescription before the action method is executed.  
 Also, I recommend reading Balus's blog post, because this topic.  
 As a solution, I suggest to deal with beans with price bond, as shown in the first comment. With this approach you will not need Action Method parameter. Also, reuse your  immediate  attribute if you think this is correct, then you have two options: (1)  instant = "true"  on  And 
 inputtactire> gt;  or (2) code> action = "# {Bean. Action (input submittedValue)}" .