Return a value based on dropdown list

[#1]

I am a newbie in making PDF form and had recently started working with Live cyle to create a fillable form and managed to create a usable one patterned with the sample Purchase Order Form (by trial and error) which came along with the installation. Can somebody please help me with this form.  I have a dropdown list on the ITEMS column and want it to automatically display the unit price of the item selected from the drop down list. By the way I managed to make the table flowable.

[Iakov_Qvaz · Accepted solution]

http://forms.stefcameron.com/2009/02/25/expandable-table-with-totals/