sum(sales) only for returning customers between 2 dates...how?

[wizardo]

hi good fellas,

i need to sum the sales only for customers who bought more then once between 2 (user selected) Dates.

...

the user have selected 01/02/2009 - 31/03/2009

i want only customers who bought more then once during that period to be included.

there are other filters involved but thats the only one i couldnt figure out

any help would be greatly appreciated

Mansyno

[#2]

hi wizardo, as u said the non returning customers will be having sales 0. Then in the property of the chart, there is something like 'Suppress Zero Values'. On selecting that, customers with 0 sales won't be displayed. In this case, it means, non-returning customers won't be displayed.