I'm working with Magento CE 1.7.0.2. I am creating a custom admin page. Tutorial I follow is from [MagentoCommerce](http://www.magentocommerce.com/wiki/5_-_modules_and_development/0_-_module_development_in_magento/how_to_create_an_admin_form_module). It is a good enough tutorial but there is no information about how to pass variables to Form Template `app/design/adminhtml/default/default/template/sintax/myform.phtml`. Probably variable must be set in file `app/code/local/Mage/Sintax/Block/Myform.php` but in tutorial file is empty. How can I pass variable to `myform.phtml`?