Hi Rob,
I had the same issued and followed your example worked great. However I have one further requirement. I need to add SUM and AVERAGE to my summaries when the column contains numeric values. Currently I only get count, maximum, minimum. I have enabled all the summaries options I can think of. Converted the numbers to decimals and rounded to two decimal places. Nothing I do shows the SUM and AVERAGE operands in the summaries list. Any chance you could update this example to also include summaries.
Thanks,
Greg