Set icon_name for push_button in Block - current row

Hi all,
i've got a little problem:
I builded an Block. The Block contains 10 rows with data-columns and a push_button (the push_button is part of the block so there are 10 buttons - each for one row).
Now i want to change the icon of the push_button for the current row within an pre-record-trigger:
if (:blockname.status ='off') then
set_item_property ('PUSH_BUTTON',ICON_NAME,'system_off');
elsif (:blockname.status ='on') then
set_item_property ('PUSH_BUTTON',ICON_NAME,'system_on');
end if;
But the icons are changed for all 10 rows (=for all buttons) and not for the button of the CURRENT row.
Anyone's got an idea about changing the icon_name of the current push_button ... ?

Albert,
I have tested for you the rollover PJC and it works fine.
Just put this code in a When-New-Record-Instance block trigger (must put the same code in a post-query trigger)
Declare
     LN$Rec Pls_Integer := Get_Block_Property( 'DEPT', CURRENT_RECORD ) ;
Begin
If :DEPT.DEPTNO = 10 Then
     SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_ON','/forms90/icons/add_on.gif');
     SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_OFF','/forms90/icons/add_off.gif');
Elsif :DEPT.DEPTNO = 20 Then
SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_ON','/forms90/icons/delete_on.gif');
SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_OFF','/forms90/icons/delete_off.gif');
Else
SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_ON','/forms90/icons/query_on.gif');
SET_CUSTOM_PROPERTY('DEPT.BT',LN$Rec,'IMAGE_NAME_OFF','/forms90/icons/query_off.gif');
End if;
End ;
Francois

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