Thanks Beatram,
I forgot to mention that was for the map zoom, I tried "WorldMapZoom" and many other things without success.
"ZO_WorldMapZoomMinus_OnClicked" and "ZO_WorldMapZoomPlus_OnClicked" work but only when you click the + and - button of the zoom.
"ZO_WorldMapZoom_OnMouseWheel" doesn't work
edit: ah : "ZO_WorldMap_MouseWheel" works!
