thx for every help
but...
if you have a backpack inside the other which does not drop ...
it will drop?
example of what I want:
in slot 3 has the backpack 2160
inside the backpack 2160 has backpack 2161, 2162, 2163 and 2164
2160, 2162, 2163, 2164 does not drop
2161 drop
thx for advanced