Fields don't update on edit

Fields don't update on edit

This is listed previously in the forum under "field don't update" with no solution.

Major portions of my application are broken and this is causing huge delays.

Very simply:

Technology_text=input.field_of_technology.toString();

this works on initial entry, but does not work when re-entering a form in edit.
The string goes to an invisible field and comprises the data we are collecting.
Production is at a standstill, and all the work done in the last week will need to be reviewed.
This is a MAJOR lapse in crucial functionality.

Peter