It appears that this is a bug. Resolume is autocorrecting the case on my system as well.
TBH it's good practice to just use lowercase when dealing with strings, so if you can change things on your listeners end to specify a different address name, I would do that.
For the time being you can try building a translator app in TouchDesigner or Chataigne to get you by.
I could also write a small translation app if you really need it, but these two apps are already established.