Correct the error of using EVAL () in AIR

[RobertoMG]

hello friends,
I want to know how I can do to correct this mistakes as it is very important to me, I tell you what I'm trying to do:

First I have a system in Adobe AIR, and everything works fine, but I want to do is that in a PHP page prints I say alert ('HELLO');
and the application I want to execute a function that returns me is what the AJAX, as shown below:

Ext.Ajax.request({ url:'http://127.0.0.1/test.php', method:'POST', autoLoad:true,
     params:{ pUsu:String('pUsu'), pPsw:String('pPsw') }, evalScripts:true,
     success:function(result,request){ eval(result.responseText); },
     failure:function(result,request){ air.trace('Failure'); }
});

then if you look where I have the eval is that what it should return the AJAX run:
This bone

eval (result.responseText);

all I have in the test.php page is:

<?php
echo("

    alert('Hola ... !!!');

");
?>

por me da un error que es:
Error: Adobe AIR runtime security violation for JavaScript code in the application security sandbox (eval)

if anyone knows how to correct this error and they would appreciate a lot, and it is very important for me to do that because I need to run functions that come from the pages of php

[makana]

I have to disappoint you. It's not possible to use eval() inside/after Ext.onReady.

Define the functions in JavaScript and return the parameters you need. Preferably in JSON.

So

success: function(response) {
	var r = Ext.decode(response.responseText);
	alert(r.myAlertText);
}

echo json_encode(array(
    'myAlertText' => 'Hello'
));