Fkey cannot be Null
I've had a problem getting a `foreign key` to work for a week now, so i need to ask for some help. I have had a `Foreign key relationship` working before on another website i made (with massive help from yourself at webassist). But this is what has got me stumped, as i have copied from the previous website, but its not working. I get `Fkey cannot be NULL` i take it this means that the Fkey column cannot be empty, so i guess the problem lies with the `session variable` but i cannot work it out. I'm using `CustomerID from the customertable and Fkey from the arttable` for the foreign key. Thanks for any help