let's say I have assigned to the rows in my table, 4 different marker sizes and shapes to identify 4 different groups which name is in the column "core". In "graph builder", I then want to show this different group names in the legend so I drag the column "core" in the "legend" field. However, although showing the right marker colors for the different groups, the legend uses the same marker shape for all. Is there a way to have the legend using different marker shapes for each group, i.e. the shapes (and colors) I assigned to the rows?