Getting NaN in Olap Datagrid

Hi,
I am using the olapdatagrid and am using a date field as a
column axis. For the other axis I have an account hierarchy. For
the measure I am using a sum aggregator.
When aggregated the data contains 5 different dates. The
problem is that where an account contains values for only some of
the dates, the olapdatagrid displays NaN which looks as though
there is an error.
I would prefer it displayed 0 but a blank (as per the Excel
Pivot Control) would suffice.
Any suggestions.

OK, actually the answer is in the documentation. You can
apply a defaultCellString property to the datagrid. In this case I
am choosing the value "" to have the grid show a blank.

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