The Graph addon has been enriched with a new property– “Decimal separator”, which allows to replace the default dot character with any other, e.g. a comma.
By default, the decimal separator in Graph is a dot character. When the “Decimal separator” property is filled with, e.g. a comma, all settings (i.e. the Y-axis minimum and maximum values) containing the dot character will have it replaced with a comma.
A full Graph documentation is available here