zf2 formFilter regex howto - zend-framework2

Question

Using zendframework v2, I have run into a problem with a regex validator on a field created by the Form factory. All other fields (using the same pattern) work without a problem.
Any tips, or pointers is appreciated.
$inputFilter->add($factory->createInput([
'name' => 'organizationName',
'filters' => array(
array('name' => 'StripTags'),
array('name' => 'StringTrim'),
),
'validators' => array(
array(
'name' => 'NotEmpty',
'options' => array(
'messages' => array(
\Zend\Validator\NotEmpty::IS_EMPTY => 'Organization name field is empty',
),
),
),
array(
'name' => 'Regex',
'options' => array(
'pattern' => '/^[a-z0-9 &-_\.,#]{3,25}$/i',
'messages' => array(
\Zend\Validator\Regex::INVALID => 'Invalid input, only a-z, 0-9 & - _ . characters allowed',
),
),
),
array (
'name' => 'StringLength',
'options' => array(
'encoding' => 'UTF-8',
'min' => '2',
'max' => '25',
'messages' => array(
\Zend\Validator\StringLength::TOO_SHORT => 'Organization name field must be at least 8 characters in length',
\Zend\Validator\StringLength::TOO_LONG => 'Organization name field must be no longer than 25 characters in length',
),
),
),
),
]));
Additional details:
I am using the ZF2 to generate a form, I also create a validation filter and then use the controller to handle proper form submissions.
The problem I am having is with the above inputFilter object that handles the "organizationName" regex filter.
It seems that although the regex patter I use both in the form definition and the input filter of [a-z0-9 &-_.,#]{3,25} does not handle the string Intl. Widgets Inc. even though I do not get an error message from $form->getMessages() etc.
Color me stumpted

Answer 1

That's because your regexp does match Intl. Widgets Inc. : http://rubular.com/r/oPbk2cdarB