Use a Listbox (LB) object as a selector
Due to a native QlikView bug, a QlikMaps object making direct selections does not properly handle Forward and Backward commands. A workaround offered in QlikMaps 2.2.2+ uses Listboxes to make selections, which enables Forward and Backward to work properly.
Delimiter
The behind-the-scenes differences in Points/Polygon objects versus Multilayer objects requires a slightly different method of setting up the Listbox selector.
Points/Polygon object
For a Points/Polygon object, use the Default Base expression to set up the Listbox selector. Set up the Default Base as normal (or add "0" if not using a default basemap), add the delimiter "," and the Chart ID of the Listbox.
Multilayer object
For a Multilayer object, use each source object expression to set up the Listbox selector. After adding the Chart ID of the source object, add the delimiter "_" and the Chart ID of the Listbox.
NOTE: Selecting via listbox in a Multilayer object does not work in the Desktop client; it will only work in the AccessPoint client.
Usage
QlikMaps will now use the related Listbox to make selections, instead of making direct selections.