Fixture builder: Outputting wrong values v3.21.2

Hey there,

I wanted to create a custom fixture with very specific media values for my image selection software. But something feels wrong while testing.

You can see the Media Folder value 9 is assigned to dmx value 128. But on ArtNet it only sends the 9. I would assume it must send the 128.

Am I understand it wrong? A already created a new fixture just in case - same problem. Using the 'Image Library' and 'Image File' functions doesn't fix it.

Thanks

Lars