Information from db.FieldStats.GetValue

Hello together,
in Germany we use the IDEA Client Version: 12.2 (v12.2.61.159).
I tried to use
db.FieldStats.GetValue(pos)
pos As Long
In the help-file there were some text-constants for "pos" like TotalDebit
But with db.FieldStats.GetValue(TotalDebit) I don't get a correct value.
How must I write the script to get the right information?

A solutuion was, to write a loop to test the values of GetValue(pos).
For the figures from 0 to 60 there were values.
I think for the most I could find out the meaning - for others I got the support from a colleague in Germany.

In the annex our suggestion - please correct, if we made a mistake.

Kind regards,
Martin