Adding support voor IMV UPS

I'm trying to make the snapshot dials working for an IMV UPS.
I'v added the Device type, and expanded the following files:

ups_monitors.xml

<MONITOR name="upsModel">
<PARAM type="APC UPS" oid=".1.3.6.1.4.1.318.1.1.1.1.1.1.0"/>
<PARAM type="IMV SitePro S" oid=".1.3.6.1.4.1.33.2"/>
<DEFAULT oid=".1.3.6.1.2.1.33.1.1.2.0"/>
</MONITOR>

<MONITOR name="batteryRuntime">
<PARAM type="APC UPS" oid=".1.3.6.1.4.1.318.1.1.1.2.2.3.0"/>
<PARAM type="IMV SitePro S" oid=".1.3.6.1.2.1.33.1.2.3"/>
</MONITOR>

opmanager_snapshot_dial.xml

<CATEGORY name="UPS">
<DIAL name="UPSLoad" displayName="UPS Load" dialType="meter" shortKey="upsLoad">
<PARAM type="APC" pollKey="UPSLoad"/>
<PARAM type="IMV SitePro S" pollKey="UPSLoadIMV"/>
<DEFAULT pollKey="UPSLoad"/>
</DIAL>
<DIAL name="UPSCharge" displayName="UPS Charge" dialType="meter" shortKey="upsCharge">
<PARAM type="APC" pollKey="UPSCharge"/>
<DEFAULT pollKey="UPSCharge"/>
</DIAL>
</CATEGORY>

opmanager_graphInfo.xml

<DEFAULTGRAPH Name="UPSLoadIMV">
<YAXISTEXT>Percentage</YAXISTEXT>
<DISPLAYNAME>UPS Load</DISPLAYNAME>
<name>UPSLoadIMV</name>
<Vendor>IMV SitePro S</Vendor>
<Monitor>Vendor Specific</Monitor>
<Description>Monitors UPS Load</Description>
<oid>.1.3.6.1.2.1.33.1.4.4.1.5</oid>
<type>node</type>
<interval>900</interval>
<THRESHOLDENABLED>false</THRESHOLDENABLED>
</DEFAULTGRAPH>

I'v tested the OID's so i know they are correct.

The dial with UPS Load has changed from "Data not available" to an empty graph,
How can i get this to work?