Replacing AutoIT Error MessageBox

When AutoIT script die because of unexpected error, it will throw an messgebox with title "AutoIT Error"

Line 99999 (File "c:\balblbla\blblbla.exe")

Error: reason of error

This kind of error will not intercepted by

$objErr = ObjEvent("AutoIt.Error","MyErrFunc")

How to change this error messagebox title and body?