Looks like you had already raised a case with GCS on this topic. Kindly close this thread if you do not have any further question.
Off the top of my head I don't know the formula for a standard normal distribution, and to be honest I don't have any idea how to apply the "cumulative" version of that.
Look up the respective formulas on the internet, then implement them for an equally distributed random variable (what PowerCenter provides).
If you post the formulas here, we may be able to help with the implementation.
For PowerCenter or for BDM? They are technically as different as can be, hence the question.