umenu: Multiple midi interfaces with the same name

Hi all!

I'm trying to set the output device of an ctlout object with a midiinfo and a umenu object. I'm using two hardware interfaces with the same name and the problem is, the output of the umenu is the same string for both interfaces. So the ctlout object always get the first device in the list even if I selected the second one. If I set the device directly in the ctlout object it works perfect, but I have this problem in combination with umenu.

I know that there is also an index outlet in the umenu object to use, but how can this help to explain clout to set the right interface?

Thanks a lot!