How to change the range in a 2-series chart

Hi.

Thank you very much for your answer, but I don't understand very well what you mean with "Set the reference". How can I set the reference?

"DataSourceSheet'!R8C1:R18C1" does exist and contains 11 rows with the value "Jan 1". I suppose that the error code line would print the "Jan 1" value on the X axis. In fact, two lines before it's executed with no problem (but with "SeriesCollection(1)").

By the way, I copied the code from "Tools > Macro > Record new macro...", but if I execute it I get the error code.

Regards.