1.1 --- a/src/Tools/isac/Interpret/lucas-interpreter.sml	Tue Apr 21 12:26:08 2020 +0200
     1.2 +++ b/src/Tools/isac/Interpret/lucas-interpreter.sml	Tue Apr 21 15:42:50 2020 +0200
     1.3 @@ -588,7 +588,7 @@
     1.4      end
     1.5  (*find_next_step from program, by_tactic will update Ctree*)
     1.6  and do_next (ptp as (pt, pos as (p, p_))) =
     1.7 -    if Celem.e_metID = get_obj g_metID pt (par_pblobj pt p) then
     1.8 +    if Spec.e_metID = get_obj g_metID pt (par_pblobj pt p) then
     1.9        ("helpless", ([], [], (pt, (p, p_))))
    1.10      else 
    1.11        let