I can not correct the error, the text of the error showed, the code showed how to fix what to replace if you need as a donkey.

Error CS0246: The Type or Namespace Name ‘Player_Control’ Could Not Be Found (Are You Missing A Using Directive or An Assembly Reference?)

Answer 1, Authority 100%

Add the namespace file at the top, where the Player_Control type is defined:

using & lt; player_control namespace & gt ;;