Hi,

I created a shopping cart. When you have finished shopping, the customer needs to fill in his/her details (name/ address etc...). 

I would like to add a field that indicates the delivery date.

So I created a custom field, all fine and smooth. 

My question now is if it is possible to do some logic on this field. You can set it visible & mandatory but is there also a way of checking whether a valid date has been entered (in the future, valid day, month etc... so no 30 th of February ;-) ) ?

Help is much appreciated.

Regards

Johan