sum all item values returned and create one

[shivathapa]

Hi,

Is it possible to sum all values returned from 6 different items and plot a graph with sum values as a total one.

[shivathapa]

create a new item from sum of all items created

Hi,
I have created a host with 12 items and is working quite well for now and plot the graph with 12 items but i want to do is create a new item which will be the sum of all 12 items for same host.
I tried to use calculated sum function but could not make it work.
I have also attached zip file which included the items created and plotted graph screenshot.