Background colour change upon selection - Map

[#1]

Hi all

I have a below expression that displays the Location name with Rank 1 in a text box correctly. I also have a map that displays multiple locations (multiple bubbles). When the text box is selected I would need the bubble to change the colour to green (rank 1 location to change to green). I have used the second expression below as the background expression in the chart.

Expression in text box to display Location name with Rank 1:

FirstSortedValue({<Location= >}Location,-aggr(sum({<Location= >}[Actual]),Location),1),

Background clolour expression in chart:

if(Location=FirstSortedValue({<Location= >}Location,-aggr(sum({<Location= >}[Actual]),Location),1), green(),red())

Regards

Kush.