Overriding cell values in a crosstab

[Greg]

Has anyone had any success in overriding cell values in a crosstab?

I've specified Yes for Define Contents in the cells that I want to override then I unlocked the report and inserted the calculations I want in the cells, but when I run the report those cells contain the name of the calculation I inserted instead of its value even though the source type property is set to Data Item Value.  I've attached a screenshot for your viewing pleasure.

Thanks.

Greg