Requisition Price check

Hi All,

I have a question. I want to write up a simple BPM that checks on a line price for a requisition and if it is above a certain value, will block a user from dispatching to a certain group of people. In theory I use the update method, check for the CurrentDispatcherId, then check the unit price but I cannot see how I am able to pick up the line price, ney I can’t seem to return any data from pre processing from the requisition. So it can’t check anything. Has anyone ever tried to pull data back from requisition update before?