Is there any function in WEB I that is equivalent to NORMINV, the excel function?

Hi All,

I am using WEB I 4.1 Support Pack6. I wonder if there is any function that calculates Sigma Metric with the excel function NORMINV or equivalent function to derive the Sigma value.

Note: NORMINV

Returns the inverse of the normal cumulative distribution for the specified mean and standard deviation.

Syntax: NORMINV(probability,mean,standard_dev)

Please help if you have any info on this.

Thanks

Badri