ui.Dialog.setSelectionMode
Defines the row selection mode for the specified list.
Syntax
setSelectionMode(
   name STRING,
   mode INTEGER ) - name is the name of the screen record, see Identifying screen-arrays in ui.Dialog methods.
 - mode defines the selection mode (0, 1).
 
Usage
In DISPLAY ARRAY instructions,
                        the setSelectionMode() method can be used to enable/disable
                        multi-row selection.
Possible values of the mode parameter are 0 (single row selection) or 1 (multi-range selection). Other values are reserved for future use.
If multi-row selection is switched off, selected rows get deselected.
For more details about multi-row selection, see Multiple row selection.