Unity Flash - mousewheel?

I have an input setup to read mouse wheel data like so:

Name: Zoom
Gravity: 1
Dead: 1
Sensitivity: 1
Type: Mouse Movement
Axis: 3rd axis (scrollwheel)

// read the zoom value
float zoom = Input.GetAxis("Zoom");

But it doesn’t work when the project is compiled and ran via Flash. I get no non-zero values back for the axis. It works fine on the web and when played inside Unity.

Any ideas?

ok so i have messing around for a bit and i have came to the conclusion that onmouse does not work with flash builds so update or something has to be used instead with getmouse(whatever u called it)