hi guys i've a table field inside my dataobject... but the table works badly.... when delete one record ... my dataobject show white... and when i add a record a ive a checkbox... this checkbox show enable but.. disable others chebox in table why?

<?php
// /mysite/code/Divisao.php
class Divisao extends DataObject {
   static $db = array (
'Nome' => 'Varchar(255)'
);

static $has_one = array (
'ObraPage' => 'ObraPage'
);

static $has_many = array (
   'Detalhes' => 'Detalhe'
   );

   public function getCMSFields_forPopup()
   {
      if( $this->ID == NULL ){
         return new FieldSet(
         new TextField('Nome','Assoalhada')
      );
      } else{
      
         return new FieldSet(
         new TextField('Nome','Assoalhada'),
      
          new TableField(
                    //'Detalhes',
             'Detalhes',
             'Detalhe',
                    array('Nome' => 'Nome', 'Estado' => 'Estado'),
                    array('Nome' => 'TextField', "Estado" => "OptionsetField('Estado','Estado',singleton('Detalhe')->dbObject('Estado')->enumValues())" ),
             "DivisaoID",$this->ID
           //"DropdownField('Estado','Estado',singleton('Detalhe')->dbObject('Estado')->enumValues())"
         
....

<?php
class Detalhe extends DataObject {
static $db = array (
'Nome' => 'Varchar(255)',
"Estado" => "Enum('Caracteristica,Acabamento','Caracteristica')"
);

static $has_many = array (
   
);

static $has_one = array (
'Divisao' => 'Divisao'
);

}