Grid sits on a page on a pageframe. Clicking on the page loads the grid. Everything works except that I want to specify a different control and controlsource for the 2nd column:

*Page Activate:
   loObject = THIS.Grid1.Column2
   THIS.Grid1.RECORDSOURCE=""
   THIS.Grid1.RECORDSOURCE="Tracy"
   IF !PEMSTATUS(loObject,'Edit1',5)
      WITH THIS.Grid1.Column2
        .REMOVEOBJECT([Text1])
        .ADDOBJECT([Edit1],[EditBox])
        .CURRENTCONTROL = [Edit1]
        .Edit1.CONTROLSOURCE = "(thisform.returntheaddress())"
        .Edit1.VISIBLE = .T.
      ENDWITH
   ENDIF
*Form returntheaddress method (field names are correct and all are character):
   RETURN (ALLTRIM(number) + IIF(!EMPTY(apt_room),"-" + TRIM(apt_room),' '))
*This fails as well:
   RETURN "Test Value"

When the pagetab is clicked, the following error appears:
Parent object will not allow this property setting for form1.pageframe1.page1.grid1.column2.controlsource.