AS400 application scanning issue with advancing to next field.

I have an application AS400/iSeries application that i am using to scan receipts into the warehouse.
The scanner is a Zebra TC20 scanner. (droid based)  I am using the Mochasoft emulation.  Pretty vanilla.

When I scan into a field, I would like the program to advance to the next field to be ready to scan.   I am using the DDS keyword Check(ER) on the fields.  but that doesn't seem to make a difference.  If I scan data that is the exact same size as the field, then it does advance.  But the part# is like 10 long, but I am only scanning 5 characters.  It needs to jump down to the qty, but doesn't.  It will if you press tab on the device.
Any way to make it do this?  this is my program.
SN1000R1 SCAN FOAM RECEIPTS  
                             
EMP#.....:                  
PO/Schdle:                  
Part#....:                  
Qty Recvd:                  
                             
LAST SCANNED:    

Any ideas?
Kevin CaldwellOwner of RUseeingRed Tech SolutionsAsked:
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Gary PattersonVP Technology / Senior Consultant Commented:
TC20 is pretty programmable.  You don't say, but assuming you're using DataWedge with a local copy of Mocha TN5250 on the Android device, then programming is very easy.  DataWedge, for example, can pad input data out to 10 characters.  Or you can tell it to append a TAB or FIELD EXIT key combination to the emulator.

If you want to use CHECK(ER), you generally put that on the last field on the screen (QTY above).  CHECK(ER) causes the system to automatically press Enter for you when the field is filled.  Not sure why you'd want to do that on a field in the middle of the screen.

Here's a link to the docs for the current version of DataWedge:

http://techdocs.zebra.com/datawedge/6-6/guide/about/

If you'd like to provide some additional specifics, I can probably give you more specific feedback.
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AS400

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