I already can print out my MDX queries made by dundas. I already see the formatting and can possibly replicate it by code in a crude way.

I am looking for...

ok so i figured out ...[All] or .Siblings is a grouping and stdev needs a {set}

so i used stdev({Descendants([Dim Provider].[Dim Provider].Siblings) },...

and Descendants gives me all the child items as...

min([Dim Measure Groups].[All],111) gives "111.0"

stdev([Dim Measure Groups].[All],111) gives "-1.#IND"

so i am not sure where my error can be.

i run an MDX of it with just 1 guys data with...

ok moving back to the Calculations area i think i see what is needed

stddev({set}, {expression})

my {set} needs to be a dimension that I am grouping by.

so in my case I...

by calculated you mean the Calculations tab then that entry takes a {set} as the parameter for stdev.

stdev({set}, expression) and typically you put in a date field here and it...

I found in the fact properties AggregateFunction and MeasureExpression

can i put STDDEV into either of these fields

my AggregateFunction only has about 12 items like min,max,count, sum, firstNonEmpty etc etc -...

since i am wanting the min value of a calculated formula in that column i tried a dif approach for min and max.

i added my calculation to my named query...