Problem with arrays

[eluser]mddd[/eluser]
So first you call index(). It shows a form. Then you call preview() with your form information. It shows some information and puts something in $this->products. Then you call create() with some form information. But when you call create(), $this->products is empty! Variables are not stored between requests! If you want something in $this->products in create(), you have to put it there! Now there is nothing, so it shows nothing.