[Xymon] Message send via trends shows last_ds as UNKN.

With a simple script I’m trying to send message to Xymon using trends message.

The RRD file get’s created with specified DS but the value for <last_ds> appears as UNKN. I have tried removing whitespaces and all but still no luck. Can anyone point what issue it could be ?

This is what I have in script:

/app/home/xymon/bin/xymon --debug smpapp-dt-a3s.net "data smpapp-dt-a1d.ula.net.trends

[test.rrd]

DS:XYZ:GAUGE:600:0:U 1323233

DS:ABC:GAUGE:600:U:U 12312312"

-Prashant