You don't set the data type for a chart to text. You can't chart text; you can only chart numbers.
What you need is a separate series to use for your labels. Use:
for your data series, and
for your labels. Store them in separate variables for easy access.
Change "Format" to "currency", then use "Notation". But only 5 characters are allowed there.
Mike -thanks for steering me in the right direction, seems to be working!
user19752 -interesting piece of information, will keep that in mind.