Setting Disk Thresholds through HPSIM

[Allianz]

I am trying to set the Disk Thresholds on all servers through HPSIM but it appears the thresholds settings are not being pushed through to the the servers even though the task results states the follwoing message: The set disk threshold was sent to the device successfully. I am using HPSIM version 5 with SP5 and I have installed support pack 7.5 on all servers. I have a mixture of windows 2000 and 2003 servers. I have checked my SNMP settings and I do have java installed on my SIM server.
I have searched the forum and can't seem to find anyone with the same issue.