"Self" references the data stored by a field. A button does not store data.
Residential Structures::Net % Good 1 refers to a field not a button. It may be set up as the source of data for the button's label, but it's the field, not the button that you are referencing here.
Is the Button also the Field?
Unless the "button" is the field "Residential Structures::Net % Good 1" the "Self" has nothing to refer to.
well now I just feel ****** thanks for clearing that up for me.
If the button is not field, it refers text of button.