I have configured Interface traffic's High threshold alert by using Interface templates and it was working fine. and i am getting mail alert when the traffic goes beyond high threshold percentage,good.

The same way i want to configure low threshold also, because whenever interface traffic degradation happens  i can get mail alert. But on interface template we can configure one threshold only(either high or low). Please find the attached for same. so i have configured low threshold value through device--> Monitors-->performance monitor--> and i have selected Interface Input Bits and Interface Output Bits  --> then i have configured low threshold value on each interface separately and i have configured Units as Percentage as shown on screenshot.

But the i am not getting alert mail on basis of percentage. I am receiving low threshold value alert on bit per second only. Please help on this so that i should receive low threshold also on percentage as like high threshold.Thanks,