Help for link to command that have no example on AutoIT guide.

Hi, i'm new on this forum.
I'm writing my personal script using AutoIT 3.3.8.1 and i need
to know if mouse wheel UP or DOWN is used to know direction  and their

steps up or down to know how is the movement.
I have the function

#include <WinAPI.au3>
_WinAPI_Mouse_Event($iFlags [, $iX = 0 [, $iY = 0 [, $iData = 0 [,

$iExtraInfo = 0]]]])

and $IiFlags = $MOUSEEVENTF_WHEEL
and $iData that informs me of movement.

But i don't know how use it and in the guide there isn't example
to study and i found nothing on web
have you some WEB link to write me in order to see ho use this function

?

I thank you if you can give me some help.