tracking the number of checkboxes selected

what i have to do is make sure that they only select a certain amount of items i have looked everywhere but it must be a simple thing that i cannot think of please any help would be great!! so i think that all i need to do is track the number that is selected when they click submit but i cannot find the answer please help me.

re: tracking the number of checkboxes selected

The fill2 variable will be a list containing the values of the checked checkboxes. It could be undefined if none are checked, so you should use cfparam to default to the empty string.

re: tracking the number of checkboxes selected

thank you for the reply....
i haven't used <cfparam> yet and i will look into it now thank you but what i need to now is how do i make it that they have to select 4 no more no less how do i track how many that they have selected.
what they want is three radio buttons that determines how many fills they want (4,5,6)
and under that i have 8 checkboxes that are the fills but how many that they aloud to be selected depends on the three radiobuttuons
thanks for the help

re: tracking the number of checkboxes selected

As I said, it'll be a list, so use listlen on the form variable. Assuming you sent it as a post request, it would be form.fill2:

re: tracking the number of checkboxes selected

thanks mate that worked :) well

re: tracking the number of checkboxes selected

You're welcome :) Glad it worked.