Problem creating template for Disk I/O percentage

[idle-]

Hi,

I just created a data and graph template for percentage of disk i/o via wmi (wmi.php) it seems to be working, but I have something wrong. The output of the script is like "PercentDiskTime:0 PercentDiskWriteTime:0 PercentIdleTime:41" but percentIdleTime is showing a Current 3.32 m Values in Cacti. Is there some option I am missing for scaling?
I used gauge for the data sources.

Seems like I did something wrong - any hints?

The template is here: http://paste.debian.net/109345/

Regards.