Can a sum() function contain multiple fields in the chart expression ?

[Nishanthi]

I came across a expression which is of this format -> sum( $(variable_name) field_name) . What this expression implies ?

[jonathandienst · Accepted solution]

The variable 'variable_name' will be expanded and injected into the expression. It likely contains a dynamic set expression. So for example, let's sat the variable contains the text "{1}", then the expression will become sum({1} field_name).