Flex 6400M with Ham Radio Deluxe on CW using DAX- Please Help

Please Help. I've hit a brick wall Attempting to use HRD with the Flex 6400M to send CW with the computer keyboard.
I'm attempting to use my Flex 6400M with Ham Radio Deluxe on CW.
If I put the Flex in either CW or CW (ssb) I can decode using DAX without any problems.
If I want to send CW I need to put the Flex in the CW mode and I can key the radio using my built in electronic keyer.
However, I've tried about every combo I can think of and I cannot get HRD to key my Flex using the keyboard.
I know this is cockpit error and no doubt some software switch, com port or setting on my Flex that II don't have in the correct mode.
If someone who is doing this succesfully can please send me configuration info, I would be very grateful!

More info:
I am NOT running the HRD using the Smart SDR.
I am using DAX which IS activated on my 6400M and the DAX window is decoding CW perfectly and passing the stream along to HRD.
However, in the TX stream window DAX it reports that "DAX IS OFF" - I DON"T KNOW HOW TO TURN IT ON.
You may email me directly at W6SFG@outlook.com,
Thank you, Bruce