>Yes, I know. I wanted to know which field of the database container had the values I was looking to change. Martina answered the question.

...and that's because of the way you asked for it, "how do I hack". But you don't need to hack it at all:

use mydbc
?dbgetprop("mytable.field2","field","displayclass")
?dbgetprop("mytable.field2","field","displayclassLibrary")

Both can be set with a corresponding dbSetProp() call. So... why hack if there's a regular way?