for i = 1 to 10
controls("CheckBox" & i).Value = False
Next

as an example.

another approach

for each ctrl in Userform1.Controls
if typeof ctrl is MSForms.CheckBox then
ctrl.Value = false
end if
Next

--
Regards,
Tom Ogilvy

"Ben.c" wrote in message
...
Euh.....
I am sorry but I am not sure of how do I create their name as a string ?
Do I have to use checkbox.name to rename them ?
Thanks for help Stephen
Benjamin