didn’t find it in forum, maybe someone also need it.
first of all, i’m beginner in AHK 
Vertical zoom
#IfWinActive, ahk_exe Cubase9.exe
lalt & WheelUp::
Send {SC22}
return
lalt & WheelDown::
Send {SC23}
return
when Left Alt holded, use your mouse wheel up/down to zoom verticaly.
in Cubase you MUST assing:
G - Zoom In verticaly
H - Zoom out verticaly.
Hold Left Shift to delete notes in piano roll
#IfWinActive, ahk_exe Cubase9.exe
LShift::
Send, {sc6}
KeyWait lshift
*LShift Up::
Send, {sc2}
Return
When you press Left Shift automaticaly use erase tool, when unpress Left Shift you switch back to 1
if you need change keys, re-assing in Cubase key command keys you want, then use this picture to find your keys
