Hi Kelly, I am trying to use a multipoint feature class with the viewer but have noticed that the cluster feature is not working. I am working with the following webmap: b0170557ffe14758baa081c139f13528 and summing off of these layers: { "id": "sumFields", "fields": [ "TOTAL_FUND", "BP", "BPTRANS", "MOEX" ] }, I have also tried filtering on PRJ_ID. Any suggestions? Smitty