Time axis setting for Pivot Chart / Table

Time axis setting for Pivot Chart / Table

Hi

  i'm evaluating the ZOHO Creator
  most requirement is satisfied
  but i got a question while using the pivot chart / table

  for example
  i have a form data with projects, each project has its own kick off date
  when i use pivot chart / table to analyse
  i may get the following result

                2011 Jan      2011 Mar
  counts            1                  2

  since i have no project kicked off at 2011 Feb
  how can i get the following result

                  2011 Jan      2011 Feb      2011 Mar
  counts            1                  0                  2
  

  could any one show the tip/trick
  many thanks

regards, Matthew