NCV module doesn't seem to accept GAUGE

I have created a test to check the SMTP queues on a Windows box using WMI. I have added the appropriate ncv settings to the hobbitserver.cfg file and the also created the definition for the graph in hobbitgraph.cfg. I am getting the graph to display on my status page but the lines are all flat. I used the rrdtool to dump the results of my rrd file and it looks like all of the data sets are being entered as DERIVE although I specified GAUGE. Here are some of the output.

-STATUS MESSAGE Sent to Hobbit- smtphealth SMTP Health Check: Inbound Connections: 10 Outbound Connections: 20 Local Queue Length: 1 Local Retry Queue Length: 0 Remote Queue Length: 3 Remote Retry Queue Length: 3

-FROM hobbitserver.cfg- TEST2RRD="cpu=la,disk,inode,qtree,memory,$PINGCOLUMN=tcp,http=tcp,dns=tcp,dig=tcp,time=ntpstat,vmstat,iostat,netstat,temperature,apache,bind,sendmail,mailq,nmailq=mailq,socks,bea,iishealth,citrix,bbgen,bbtest,bbproxy,hobbitd,ExchDB=ncv,smtphealth=ncv" NCV_ExchDB="STORE:GAUGE" NCV_smtphealth="InboundConnections:GAUGE,OutboundConnections:GAUGE,LocalQueueLength:GAUGE,LocalRetryQueueLeng:GAUGE,RemoteQueueLength:GAUGE,RemoteRetryQueueLen:GAUGE"

<!-- Round Robin Database Dump --> <rrd> <version> 0001 </version> <step> 300 </step> <!-- Seconds --> <lastupdate> 1142001796 </lastupdate> <!-- 2006-03-10 09:43:16 EST -->

    <ds>
            <name> InboundConnections </name>
            <type> DERIVE </type>
            <minimal_heartbeat> 600 </minimal_heartbeat>
            <min> 0.0000000000e+00 </min>
            <max> NaN </max>

            <!-- PDP Status -->
            <last_ds> 0 </last_ds>
            <value> 0.0000000000e+00 </value>
            <unknown_sec> 0 </unknown_sec>
    </ds>

    <ds>
            <name> OutboundConnections </name>
            <type> DERIVE </type>

Jeff Ehrenberg Technology Services Coordinator NY State Association of REALTORS, Inc. 130 Washington Avenue Albany, NY  12210 518.463.0300 jehrenberg at nysar.com