can someone help me to convert this from pc to mobile platform

im getting this error on mobile platform: 'GetComponent' is not a member of 'Object'

for (stage = 2; stage <= cells.length; stage++) //check the stage no.

         {

             for (i = 0; i <= cells.length - 1; i++) // 

             { 

             

                 if (doorsToCells[i] == stage - 1)

                     for (var checkDoor : GameObject in cells[i].GetComponent(AIpathCellScript).doors) //

                     {

                         if (checkDoor != gameObject)

                         {

                             for (var checkCell : GameObject in checkDoor.GetComponent(AIpathDoorScript).imediateCells)

                             {

                                 for (var j : int = 0; j <= cells.length - 1; j++)

                                 {

                                     if (cells[j] == checkCell && doorsToCells[j] == null)

                                         doorsToCells[j] = stage;

                                 }

                             }

                         }

                     }

             }

         }