How to enable vxdmpadm Videos

Hello, i´m trying to do a slope analysis, i´ve already created the surface and had the analysis made, however when the legend table is created i can´t manage to get the 2d area column, even though i´ve tried adding the column from table properties- table style and adding it to the structure, all i get is a column with zeros instead of the area do you guys have any idea of what could be happening?? thanks!!