how to register a public module?

Hi Everyone,
   I want to register a module that should be accessible for customers 
not logged-in  yet. This module should return a JSON data. I want to 
improve the login by making some validations while the user is typing, 
before he click the submit button.

So, I create a simple OTRS package for install this module.
It's configuration file is like this:

<?xml version="1.0" encoding="iso-8859-1" ?>
<otrs_config version="1.0" init="Application">
<ConfigItem Name="PublicFrontend::Module###PublicMyPackage" Required="1" 
Valid="1">
       <Description Lang="en">Frontend module registration for 
MyPackage.</Description>
       <Group>MyPackage</Group>
       <SubGroup>Frontend::Public::ModuleRegistration</SubGroup>
       <Setting>
           <FrontendModuleReg>
               <Description>MyPackage</Description>
               <NavBarName>MyPackage</NavBarName>
               <Title>MyPackage</Title>
           </FrontendModuleReg>
       </Setting>
   </ConfigItem>
</otrs_config>

But the module is inaccesible in the public.pl. This URL: 
http://<HOST>/otrs/public.pl?Action=MyPackage
doesn't work. And shows the following error: "Error: Got no ModuleReg!"

All files are copied correctly:

Kernel/Config/Files/MyPackage.xml
Kernel/System/MyPackage.pm
Kernel/Modules/PublicMyPackage.pm
Kernel/Language/en_PublicMyPackage.pm
Kernel/Output/HTML/Standard/PublicMyPackage.dtl

What i am doing wrong? Can someone helpme?

Thanks!
Juan Manuel


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