Hi,
Sorry, but this is not possible with the Google chart API. When using “Split options in separate series” it only count the not-empty lines – it cannot sum up values from another column.
To be able to show it like you require, you must have one separate column in the list for each sales person (and insert the Amount sold in this column) and add each one as a separate series in the chart.
You can do this by adding a calculated column for each sales person, but if you have many persons this might not be the best way to do it.
Sorry about that,
Alexander