passing an array retrieved from model function1 to model function2

[eluser]amipaxs[/eluser]
ok,

When I pass the retrieved array $this->MWOrkOrder->process2($data) to my second function in the model ,i get an array inside an array inside an array(as seen on the image), i need to get the id_elem value

Code:

Array
     (
         [elements] => Array
            (
                [0] = Array
                   (
                     [id_elem] = 1
                   )
                 [1] = Array
                   (
                     [id_elem] = 2
                   )
           .....