Laravel Form:select Multi select not working if array value is numeric

Form:select()

I want to select multiple options in select, but its only work if Array index key is string, If array index key is numeric its not working...

Any help please..

Working Example:

Form::select($field_data['name'], 
         array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), //Options list
         array('S', 'M'), //Selected values
         array('multiple')); //Multiple True

Not working with Numeric Array Keys

Form::select($field_data['name'], 
         array('5' => 'Large', '2' => 'Medium', '10' => 'Small'),  //Options list
         array('10', '2'),  //Selected values
         array('multiple')); //Multiple True

// Just Form>select>options print, but no option selected

I want to select multiple option, and options keys are numeric ids..

via Chebli Mohamed