I am trying to append a string to the special field “$name” in the hover tooltips. For example I would like to append “_percentage” to special field: $name=2017 then the result would be “2017_percentage”. The result would the name of a column in my datasource.
tooltips = “”"
The above tooltip above doe not work because I think $name_percentage does not give me the name of the column i.e 2017_percentage.
Please could you advice how I could achieve it.