a.x = 42
attr is a string, as it should be
Getting y
a.y = 41
attr is a string, as it should be
Getting z
a.z = 43
attr is a string, as it should be
Intercepted attempt to set x to 0
a.x = 42
attr is a string, as it should be
Intercepted attempt to set x to 43
b.x = 42
b.x = 43