Multiple UDP binding

Hi guys,
I have a switch that works fine:

Switch  Kitchen_light   "Kiindent preformatted text by 4 spacestchen_light" <light> { udp=">[ON:192.168.20.12:5005:'MAP(Kitchen_light.map)'], >[OFF:192.168.20.12:5005:'MAP(Kitchen_light.map)']" }

But I also need to send a different command to a different server on a different port. If I add it like this:

Switch  Kitchen_light   "Kitchen_light" <light> { udp=">[ON:192.168.20.12:5005:'MAP(Kitchen_light.map)'], >[OFF:192.168.20.12:5005:'MAP(Kitchen_light.map)']", udp=">[ON:192.168.20.11:5006:'MAP(Kitchen_light_update_master.map)'], >[OFF:192.168.20.11:5006:'MAP(Kitchen_light_update_master.map)']" }

only the second series of commands works, the machine 192.168.20.12 doesn’t receive nothing any more.
Why?
How else do I do that?
Thanks!!!
Andrea

No one???