How to suppress button getting through when using key combinations?

[Highvoltage]

So i had this script for ages, i basically hold down the side mouse button, and use the wheel to increase or decrease the system volume:

Code: Select all

XButton1 & WheelUp::
{
 Send {Volume_Up 2}
}
Return

Now it always sends the Xbutton1 through (which is the back key) and i wan't to block that button from sending.
Now i always accidentally navigate back when i want to change the volume.

It worked for a long long time, it didnt' send the first key thorugh but after an update, or i don't know or maybe Windows 10 caused this, it's now working differently...