RegistryValues – PB Docs 2018

key

A string whose value is the key in the system
registry for which you want the values of its
subkeys.

To uniquely identify a key, specify the list
of parent keys above it in the hierarchy, starting with the root
key. The keys in the list are separated by
backslashes.

valuename 

An array variable of strings in which you want to
store the names.

If the array is variable size, its
upper bound will reflect the number of named values
found.

If the array is fixed size, it must be large
enough to hold all the names. However, there will be no way to
know how many names were actually found.