Re: Value not flowing back

have you created module or function pool for your additional screen? Instead of creating "module/ function pool" try creating executable program.(Type 'E")  program and check.

in method "GET_TAXI_SCREEN', where you assign screen and program name, use

e_screen  = '1111'.                                                                   

e_program = 'ZXD01_ADD'.    

Then, go to SE38, create an executable program named   'ZXD01_ADD' and create screen '1111' in that program.

Regards