allowMultiSelect

A Boolean property that controls whether multiple selections are allowed in the list box. If multiple selections are allowed, the multiSelectListname and multiSelectCodefield properties must be specified. Note that only a listbox is capable of multiple selections. If size is 1, this property will be ignored.

Default value

false() – only a single selection may be made in the list box.

Valid values

true(), false(), or a valid expression that returns True or False.