error CS1061 does not contain Position, says I am missing a directive or assembly reference ?

Hi I am getting an error message trying to make something fly My error message says error CS1061: Type "UnityEngine.Transform" does not contain a definition for "Position" and no extension method "position" of type "UnityEngine.Transform" could be found (are you missing a using directive or an assembly reference?) ![alt text][1] [1]: /storage/temp/75007-unity-script.png