Could you please more clear ?
Thanx

"David Biddulph" wrote:

Replace your NULL by =NA().
--
David Biddulph

"Pietro" wrote in message
...
Hi all,

I have a sheet with charts that works well,but i have a problem,if the
value entered in the source data is NULL,the chart displays it as if it
were
0,i tried to change the frormat of the source data cells to number or
general,but i always get the same result..can anybody help ???