Not sure where this value is, and can I use it for proportional symbols

[Steve]

To the group,

I apologize up front for not understanding where this value resides. 

I am using the Map View of Exhibit 2.x and when I have items that reside at the same coordinates, the marker on the map groups them and place a number in the marker that shows the total of items that exist at that location.  I would like to use this value in the marker that I am specifying (ex:sizeKey=) for another map that I implement proportional markers?  I just cannot seem to find anything that tells me how to reference this value?

Can anyone help me determine what value should go within the "" on this statement ex:sizeKey=""  that uses the value contained with the marker?

thanks so much...

Steve

[Steve]

To the group,

Any thoughts from anyone on the below.  I have a school project and this would be very helpful to understand how to get at the value within the map marker.

thank you!

Steve