Method XbpRadioButton():setData() Foundation
Sets the current value or state of the radiobutton.
:setData( [<lCheck>] ) --> lOldCheck
This method returns the value stored in the edit buffer of the radiobutton before the :setData() method is called.
The :setData() method changes the value for the current state of the radiobutton. The parameter <lCheck> does not need to be included when a data code block is contained in the instance variable :dataLink. If :setData() is called without a parameter, the data code block in :dataLink is evaluated and its return value is used as <lCheck> (see DataRef()). If a code block is not contained in :dataLink, a value must be specified for <lCheck>.
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