Hey Jenny,
Not sure if i understand this correctly... The values and fields have to mapped to Cost Source if you want them to show in the report.
If the value is not something that you can directly retrieve from the
Metrics (ie, Cost YTD, Annual Budget etc...) you will need to create one in the
Metrics. Alternatively, you can create your own formula column but that only works for TABLE ( top menu > Data > Insert > Edit) not chart.
#ApptioforAll