could you help me?

I've a form (i.e. customer) with subform(i.e. cars).

in another form, I need to filter lookup CARS when I choose the CUSTOMER. How can I do it? I already seen the link, but it don't help me.

Will place an example for clarity

FORM A

Customer name 

Subform Cars (plate, type, color)

FORM B

Lookup Customer

Lookup Car

in Form B, if I select the Customer "Mr. White", I would like to see in the lookup Car only the cars of Mr. White.

Can I do this with lookup filters? How?

Thanks in advance,

Kind regards,

Giuseppe