Problem with dropdown [SOLVED]

[eluser]Brayan[/eluser]

Code:

foreach ($forn->result()as $dados )
                      
        $options[] = array(
                    
                 $dados->ID => $dados->NAME                      
                    
         );
echo form_dropdown('fornec',$options);

this code produce many <optgroup> with values that that start from 0 and each line it increments

why is doing this ?

thanks