Defining a new method for business object

[רונן פוקס]

Dear workflow people,
 
I am in the stages of building my first 'serious' method for a business =
object.
 
A function module has been written, and this function module is called =
from the method.=20
 
The function module is a simple dialog screen in which the user inputs =
data in one field
 
The source code in the method looks like this:
 
BEGIN_METHOD BBC_SCORE_STRATEGY CHANGING CONTAINER.                  =20
data:                                                                =20
BBC_SCORE TYPE NUM03,                                                =20
                                                                     =20
CALL FUNCTION 'Z_WF_BBC_STRATEGY'                                    =20
 IMPORTING                                                           =20
   BBC_SCORE                  =3D BBC_SCORE                            =20
                                                                     =20
SWC_SET_element CONTAINER 'bbc_score' bbc_score.                     =20
                                                                    =20
END_METHOD.                                          =20
 
A task is defined based on this method.
 
My problem: in the workflow, the task is always completed, without =
difference if the user chooses 'save' or 'exit' or 'cancel' in the =
dialog screen (the function module)
 
Am I missing something in the source code of the method ?
 
The desired situation is that if the user chooses 'exit' or 'cancel' =
without saving, the task will not be completed.
 
Thanks in advance for your help.
 
Best regards
 
Ronen