Validation dynamic rules with lable

Hell,
I'd like to use label on my dynamic rules form language file. Please see bellow code:

PHP Code:

protected $dynamicRules = [
        'updateAccount' => [
            'id'    => 'required|is_natural',
            'name'    => ['label' => 'Label_From_Language_File', 'rules' => 'required|min_length[6]'],
        ]
    ]; 


Please see Label_From_Language_File : When I used lang(Dashboard.name) I got an error.

Thanks