RadioButtonGroups in WDJ: hiding 1st button but leaving it pre-selected

In an ABAP General thread, Narendran confirmed the fact that you can't hide the first radiobutton in a regular ABAP screen radiobuttongroup but leave it pre-selected.
In other words, if you have buttons:
RB0 RB1 RB2 RB3 RB4
you can't hide RB0 and leave it preselected. Once you make RB0 invisible, either in the painter or in a "loop at screen" in your code, SAP will pre-select RB1.
So I'm asking WDJ developers to think about this and if it is also the case in WDJ, then change the WDJ code so that you can hide the first button of a group but leave it pre-selected.
Apparently, GUI/XT allows you to pull this trick off.
(Note: this was also posted in the WDA forum for the WDA developers.)

If you want to hide a radio button from a group, you have to use individual IWDRadioButton elements instead of IWDRadioButtonGroupBy{Index, Key}.
Armin

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    In an ABAP General thread, Narendran confirmed the fact that you can't hide the first radiobutton in a regular ABAP screen radiobuttongroup but leave it pre-selected.
    In other words, if you have buttons:
    RB0 RB1 RB2 RB3 RB4
    you can't hide RB0 and leave it preselected.  Once you make RB0 invisible, either in the painter or in a "loop at screen" in your code, SAP will pre-select RB1.
    So I'm asking WDA developers to think about this and if it is also the case in WDA, then change the WDA code so that you can hide the first button of a group but leave it pre-selected.
    Apparently, GUI/XT allows you to pull this trick off.

    Hi Thomas -
    Thanks for taking the time to reply. 
    It would never have occurred to me to construct an RBG this way, but I'm doing a simplified front-end for IW26 for some functional analysts who are seriously scared that if we use the usual kind of RBG with the first button preselected, then some lazy or careless users will always leave this default selected and never change it.
    So what they want is for an invisible dummy button to be preselected, leaving the other buttons all unselected, thereby eliminating the possibility of misakes out of laziness or carelessness.
    They also think that this trick can be pulled off in GUI/XT and this is what prompted me to investigate the matter and then report what I had found in the ABAP General forum.
    The site managers here do NOT want to renew support for GUI/XT and I have been tasked to come up with some custom ABAP instead.  (I'm not, of course, rewriting IW26 - just a simplified front-end to call BAPI_SERVNOT_CREATE and _SAVE.)
    So I was curious whether SAP can do the same thing as GUI/XT, assuming that the analysts are correct in saying that GUI/XT can do this. Frankly, I'm not sure what I think of the idea - I can kind of see where it might have some merit.
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