HyperTerminal does not show correct field type.

Hello, I am testing ADCS using Hyperterminal. I have create a putaway, and found it in hyperterminal by taking the putaways option after signing on. The problem is that I cannot amend the fields which are stated as Field Type=Input on the Warehouse Activity Miniform. i.e. the Qty to Handle. Stranger still: there is one field that is input capable in Hyperterminal and that is the bin code for the “Receipt” line, but no other fields are and the bin code is not editable on the “Place” line. Any clues? Everything else seems to be communicating ok. For e.g. if I have already filled out the qty to handle in the putaway form before selecting it in Hyperterminal, when I press F3 in hyperterminal the Putaway is registered correctly. Thanks, Jon.