RME HDSP card and Max MSP 5 not reporting latency and timecode via adstatus?

Hello,

I try to use the adstatus latency and timecode features, with an RME HDSP Madi and AES32 with TCO, but I doesn't work.
adstatus latency report zero, as well as adstatus timecode.

Since RME drivers are quite seriously develloped, I'm surprised that both functions are not working in Max/MSP. (HDSP TCO support both LTC thru APP and MTC)

Do I make a mistake, or could it be a problem with Max/MSP? Any HDSP user more lucky?

here an example of a patch I use to test this (from the max help files):