cakephp3 form radio control access other entity value - php

Question

I need to populate some entity value into the radio HTML code, I look
through all documentation but does not seem to be able to find any help
below is the php code, {{entity->description}} is the entity value I want to show
$this->Form->setTemplates ( [
'radioContainer' => '{{content}}'
] );
echo $this->Form->control ( 'OrderShippingMethodId',
[
'templates' => [
'nestingLabel' => '**<p>{{entity->description}}</p>**
{{input}}{{text}}',
'radioWrapper' => '{{label}}' ],
'options' => $shippingMethodsRadio,
'type' => 'radio',
'label' => false,
'type' => 'radio',
'id' => 'OrderShippingMethodId',
'legend' => false ,
'escape' => false
] );
it generate the below html code, the <p></p> is not showing the entity description value
Shipping
as can be seen in the bold code above, the entity->description value cannot be read
out, seem that the only value the form->control can read out from the
entity is text, value. is there anyway to access other value in the entity
in the controller method, to populate $shippingMethodsRadio
$this->set('shippingMethodsRadio' => $shippingMethods->extract('radio'));
the $shippingMethods, will contain a collection of the entity shippingMethod, I want to read other value like description property in the entity into the radio control, the radio property in the shippingMethod return an array contains value, text, description property of the entity to populate the radio control
thank you