PPDS Alert Monitoring: Container Resource

Gurus,

I need to configure alerts when the order quantity exceeds container storage capacity. I have done the following:

a. In the PPDS alert profile, I have checked the following alerts:

               Maximum quantity exceeded

                Minimum quantity not reached

This alert profile is added to the overall profile.

b. In the resource view, I have declared the resource as container and entered maximum and minimum limits (lower limit = 10 KG, upper limit 20 KG):

c. In DS board, I have loaded one order with quantity 100 KG in the same resource, but when I call up alerts there is nothing displayed:

Any clue why this is not working? Has anybody faced such issue?

Thanks

Snigdho