Oracle Forms

I am new to form personalizations and I am trying to create a personalization that will automatically display the "last price paid" in the Price field in a Purchase Order form for an Item once the Item No. is entered. Also once the data is pulled up, they need to be able to edit the 'Price' field to enter the current price.

I am not sure how to setup my form personalization using the SQL view to I have that contains the "last price paid" data. I would really appreciate some help on how to do this in personalizations.

Thanks
KG