Hi

Trust me, it took me days to figure this out but if i have the headache on that, then someone else might probably be having same.

But here is how it worked:

In the
static $db = array(

   'Issu' => "Enum('One, Two, Three','One')",

);

and in the :

function getCMSFields()
{
      $fields = parent::getCMSFields();
      
      $fields -> addFieldtoTab('Root.Content.Main', new DropdownField('Issu', 'Issue Type', Array('1'=>'One', '2'=>'Two', '3'=>'Three')));

      return $fields;
}

Just replace the One, Two, and Three with you titles and you can also continue the array. Its quite simple.