Label Based On Variable Folgen

When you state that all other info on the label will be refreshed based on the value entered in for the packing slip number, do you mean that various other objects/data sources will use data that relates to the packing slip number entered and that is what will be printed?  Is this not really just a document that is connected to a database/datafile of some kind and that the packing slip number is simply a value that the print operator enters in as the criteria for a query.  The query thus returning a matching record of data for printing.

The below training videos should set you on the right track I think:

http://www.seagullscientific.com/label-software/training-video-(reading-data-from-database).aspx

http://www.seagullscientific.com/label-software/training-video-(selecting-records-from-a-database-at-print-time).aspx