display value instead of status

[ilia]

How i can display an item with value on MAP
for example on each server we have a number that indicate how many users currently logged in to it)
i would like to make a map and put each host with its value:

host1
22

host2
16

host3
...

[kester]

Is it possible to create a new Value Map via the API? I don't see any mention of this in the API documentation.

Thanks for any suggestions.