Hi @bruno.arnold,
I checked the code of that custom Interface Asset, then checked Microsoft .NET documentation here.
I don’t see a way to specify the outgoing port but it’s probably doable. I’ll make sure the latest code is made available on Github so you can take a look in there and make these modifications.
It’ll basically be an update of this one (sender only): GitHub - intuiface/UDPSenderInterfaceAsset: Intuiface Interface Asset the enables to send commands over UDP
Seb