Set bubble size in grid chart

[#1]

Hello everybody

I am working on a grid chart and I didn't find how to make it works.

I want to display for each of my country (in X axis) an average (in Y axis) with a bubble. So, I want the size of the bubble is according to the number of answers I got in my survey for the current country...

Do you have an idea ?

Regards,

Pierre

[#2]

Actually the chart will do this automatically. Size of the bubble is related to the value of the expression.

Maximum size is controlled through chart settings.