I just added a subject/observer into my app and the code shown in the docs doesn't work. This is the code suggested by the manual:

LPARAMETERS toObject
LOCAL loState, lcState, lcType

loState = toObject.GetState()
lcState = loState.Get(1)
lcType = loState.Get(2)

IF lcType = "PROJECTS"

   DO CASE
      CASE lcState = 'SAVE'

           This.Parent.ClientsObj.Requery()

      OTHERWISE 
  
           RETURN .F. 

   ENDCASE
ENDIF

The problem with it is the line: lcType = loState.Get(2) - it returns a logical .F.

I changed it to: loState.cSubjectType which seems to work.