Saving file to same path as open file

Yet another problem with my coding. The code below should save the open file to the same path as the open file + Range(Debrief_Folder). The code after this worked before I started fiddling!

ActiveWorkbook.SaveAs Filename:=ThisWorkbook.Path & "\" & Range(Debrief_Folder) & Range("Ex").Value & " " & Range("Name").Value _
        & " " & Format(Dt, "dd-mmm-yy") & ".xls", FileFormat:=xlNormal

What have I done wrong!