Display extra information in tooltip (map visualisation)

[gaznez]

I have a working model that includes a map visual showing where all the customers are.  The map has 'postcode' as the Location, 'Total Sales' for the bubble size and 'Customer name' as the tooltip.  So when you hover over a bubble it tells you the postcode,  Sales value and 'First customer name'.  We have some postcodes where there is more than 1 customer.  Is there any way to get the tooltip to show all of the customer names at that postcode?

[gaznez · Accepted solution]

Managed to find a solution myself.  I created the following measure:

ConcatCustomers = CONCATENATEX(

    CustomerMaster,

    CustomerMaster[Customer Name],

    ", ")

Then I dragged this measure in to the tooltip field for the map visual.  Now if one postcode has several customers - it lists them all separated by a comma.