Filters Using Relationship Id

I have problem with filters using relationship id like:
in Model
return array(
'mname' => array(self::BELONGS_TO, 'Voilencemethods', 'name'),
);

using in GridView
array(
'name'=>'name',
'value'=>'$data->mname->name',
'filter'=>CHtml::listData(Voilencemethods::model()->findAll(), 'id', 'name'),
),

But when i select a value from dropdown list having id like 1 it also load all the name having id 10, 11, 12 ..., in short all those IDs having 1.
Kindly any solution?