How do I obtain and/or interpret __interval & _collInterval?

Question

I have a use case where I need to upload event log entry metrics that have occurred during the interval collection period. I have tried to use two properties collInterval and _interval to achieve this and am not having any success with either.
Using the __interval I have put it into a compute_expr like this:
<ColumnDescriptor NAME="Interval" TYPE="NUMBER" IS_KEY="FALSE" COMPUTE_EXPR="__interval">
<Display>
<Label NLSID="Interval">Interval</Label>
</Display>
</ColumnDescriptor>
In this metric my collection interval is defined as 10 minutes. However, in the metric display (all metrics...) the __interval property is showing incrementing values like this: 2250093, 2251290, 2251505, .....
Are these values a times tamp of some kind? How do I interpret them?
With the _collInterval I have used it as a SYSTEMGLOBAL property (yet not sure how this would be a SYSTEMGLOBAL property since the interval would be specific to my instance/metric, I thought the SYSTEMGLOBAL properties came from emd.properties...) as I have seen in another example. Then passed it into my fetchlet, in that case I get a value of 0.
Example of using the _collInterval property:
<QueryDescriptor FETCHLET_ID="OSLineToken">
<Property NAME="INTERVAL" SCOPE="SYSTEMGLOBAL">_collInterval</Property>
<Property NAME="scriptsDir" SCOPE="SYSTEMGLOBAL">scriptsDir</Property>
<Property NAME="OracleJavaBin" SCOPE="SYSTEMGLOBAL">JAVA_HOME</Property>
<Property NAME="command" SCOPE="GLOBAL">%OracleJavaBin%/bin/java -classpath %scriptsDir%/emx/%TYPE%/SvmMonitor.jar</Property>
<Property NAME="script" SCOPE="GLOBAL">com.xxx.OsLineToken</Property>
<Property NAME="args" SCOPE="GLOBAL"><![CDATA[
                              Type=EventViewerFetchlet
                              Server=%Server%
                              Server2=%Server2%
                              AgentHostName=%DefinedSvmHostName%
                              Username=%Username%
                              Password=%Password%
                              CollectionInterval=%INTERVAL%
                 ]]></Property>
<Property NAME="startsWith" SCOPE="GLOBAL">Token=</Property>
<Property NAME="delimiter" SCOPE="GLOBAL">|</Property>
</QueryDescriptor>
Any assistance is very much appreciated!

Answer 1

Hi Larry
Thank you for the advice.
Cal
On 10.10.2014 10:00, Larry G. Schneider wrote:
HOW DO I OBTAIN AND INSTALL VARIOUS PLUG-IN'S FOR INDESIGN CS4
created by Larry G. Schneider  in InDesign - View the full discussion