I've created a Web Scene for an indoors on ArcGIS Online. I'm attempting to insert a graphic at the clicked map point within the scene to obtain the z-value. I'm deriving this value from the z-value configured in the level layer of the Web Scene. However, there is a disparity in the z-values. When I click on the map, the event returns a value of 219, while the level layer specifies a value of 6. What might be causing this inconsistency?