Dial Gauge thresholds are changing after I set them


I have a dial guage that is monitoring Web Current Connections.
I have the threshold 1 = 200. When I close the properties window, the gauge is correctly showing the threshold level. However, if I close down and open the dashboard, the gauge will show the threshold = 100. If I open the properties window and immediately close it, the threshold will set to 200 correctly.
The maximum for the gauge = 450.