getSuccessfulLogonCounts Deprecated??

Hi, We are migrating our content from Portal 6.20 to NetWeaver 2004s, but we were using part of the UME API to make some reports, like telling who many times has a user logon to the portal with de function

getSuccessfulLogonCounts()

which is part of the IUserAccount class.

But now that I have tested this development under 2004s, for all the users I always get the 0 value.

In the UME JavaDoc documentation I can see that the function is not there anymore:

https://media.sdn.sap.com/javadocs/NW04s/SPS7/se/index.html

But in the code I can see the function there under IUserAccount.

Does somebody knows what is happening?

Regards.