If you get multiple entries when hovering the mouse over a variable name in the Microsoft Dynamics NAV 2015 debugger – you are out of luck.
The debugger does not perform a lexical parsing of the source, so it will just search the variable space, and in cause of multiple hits, it will show them all.
So when you hit something like this, you got to perform your own parsing – In my case, this came from a piece of code that used the WITH <?> DO statement.