Linked Select lists


Hi all

I’m not going to keep on saying I love Coda as I don’t want them getting a big head, but I do lol

I’ve created a table with linked select lists but I want to idiot proof it.

I have a table like so

Car | Ford | Fiesta
Car | Ford | Galaxy
Car | Vauxhall | Corsa
Van | Suzuki | CarryVan
Van | Renault | Traffic

I have my select lists working correctly so that If I select Car, only Ford and Vauxhall will show, If i then select Ford then only Fiesta and Galaxy will show. So far so good.

Now, if someone changes from Car to Van, my previous selections will stay in place, is there a way to reset them so every time I change a previous selection, any selections after will erase?