calculated item "count" function

[Spirou]

Hi,

i create a "calculated" item and i want count for a 24hours period but it cant work.

Here my calculated item :

count(86400,"item.tools.number1")

any idea ?

ty

[Spirou]

I found "sum" function and it work but the problem is i have not the good number...

sum("item.tools.number1",24h)

the function return me a number like "245102" but it doesnt correspond to the sum of my item trapper "item.tools.number1". My item trapper had a total max of value sum to "5107". I do a clear trend history and nothing change.

Any help please ?

regards.