The mapId for each embedded map can be found by viewing the map's "About PlatWidget" pop-up. Follow the steps below to locate a mapId for use with the PlatWidget Filtering API.
Open the "About PlatWidget" pop-up by clicking or tapping the PlatWidget logo located in the lower-left corner of the embedded map.
Alternatively, click or tap the "Info & Settings" icon located in the lower-right corner of the embedded map and expand the "About PlatWidget" section.