Problem with select list dependencies

Hi guys,

in my project I have two select lists which depend on each other.
In list 1 I choose item 1, now in list 2 item 1 will automatically selected. Up to here it works fine.

But when I add more dependencies like:
list 1 item 2 -> list 2 item 2
list 1 item 3 -> list 2 item 3 ...
it doesn't work anymore. Why that? I have tried AND, OR and XOR, but it doesn't work. Can you help me please?

Thanks.

Yours,
Luke.