Trying to make my middle mouse button to function as 3 different keys based on the elapsed time it has been pressed

I'm using AHK and my main goal is to make my middle mouse button to function as it normally would if I pressed it once, but would trigger Ctrl+C or copy if I pressed and held it for 500ms and paste what is copied or Ctrl+V if I kept on pressing for 1000ms

I have searched the Internet for a week but couldn't find a solution (maybe its because I'm new to this) but here's some codes I found that I believe would get it done but for some reason I couldn't get it to work.

Here's the code I found:

RCtrl::    keyDown := A_TickCountWhile GetKeyState("RCtrl", "P")        Send {Ctrl Down}    duration := A_TickCount - keyDown    Send {Ctrl Up}    if duration < 300        Send {Enter}    Return 

and I have tried to modify some of it

MButton: :    keyDown := A_TickCount    While GetKeyState("MButton", "P")    Send {^C}    duration := A _TickCount - keyDown    Send {Ctrl Up}    if duration < 299        Send {MButton}    if duration < 500        Send {^C}    if duration < 1000        Send {^V}    Return