Hi, good day. I'm new to Aximmetry! I'm using Aximmetry Professional DE.

Does anybody know how I can do the matte composite in Aximmetry? 

Here is my current system workflow: Blackmagic Ultimatte 12 4K to do the key and output the fill and combined matte to Blackmagic UltraStudio 4K Mini and take the video feed into the Aximmetry, but the video doesn't output an alpha channel! So it comes with the black background! 

Does anybody know? Please kindly help me! Thank you. I really appreciated it!