How to attach virtual joystick to prefab?

Hi, l make 2d multyplayer tanks game with photon. To spawn player l put tank prefab into resurces folder and do the code but l can’t atach virtual joystick to tank prefab movement script. l try in script joystic = GameObject.Find(“Fixed Joystick”), but l got error Cannot implicitly convert type ‘UnityEngine.GameObject’ to ‘Joystick’. What l can do thanks.

hey Laki, have you found the fix for this?