Hi. Ive got these RealTypes: time->( ( xCoord, yCoord, zCoord)-> concentration) where concentration is the concentration of a pollutant. Since ive 5 pollutant, ive got 5 function like the one of above. These RealTypes are mapped this way: time - Animation xCoord - XAxis yCoord - YAxis zCood - ZAxis Concentration - IsoContour These way im able to visualize some contours in the same display. But theres one problem. The IsoContour Map is added to display when the user (via interface) click s on a button (like Vis5D) and, since the user can click on other buttons like "Volume" (with another ScalarMap), the IsoContour Map must be removed from the display too. So, when i must remove one map, i refresh my display removing all references and all maps, and, then, adding all the maps (including the new one) and all the references. The problem is when i do this, the ContourWidgets i prevously got go disabled, and im not abled to use them. How can i solve my problem. Many thanks.