I am having trouble with the number field validation - if you enter "£100" instead of "100" then the form will leave that field blank!
I can stop it from letting it through blank by making it a required field, but then the validation error message "This field is required" is not helpful at all, as people may try entering "£100" in again.
Ideally if you enter "£100" I'd have some javascript strip out the £ sign, I will look into doing that, but is there any way to change the error message to "Please enter a number"?