diff -r a5e2fda0b31a nml/actions/action2var.py
--- a/nml/actions/action2var.py Tue Sep 09 13:21:01 2014 +0200
+++ b/nml/actions/action2var.py Tue Sep 09 19:12:08 2014 +0200
@@ -956,8 +956,10 @@
     # since we need the variable name later on, a reverse lookup is needed
     # TODO pass the function name along to avoid this
     func60x = lambda value, pos: expression.FunctionPtr(expression.Identifier(generic.reverse_lookup(vars_60x, value), pos), parse_60x_var, value)
+    funcg60x = lambda value, pos: expression.FunctionPtr(expression.Identifier(generic.reverse_lookup(action2var_variables.varact2_globalvars60x, value), pos), parse_60x_var, value)
 
     return expr.reduce(extra_dicts + [(action2var_variables.varact2_globalvars, parse_var), \
+        (action2var_variables.varact2_globalvars60x, funcg60x), \
         (vars_normal, parse_var), \
         (vars_60x, func60x)] + \
         global_constants.const_list)
diff -r a5e2fda0b31a nml/actions/action2var_variables.py
--- a/nml/actions/action2var_variables.py       Tue Sep 09 13:21:01 2014 +0200
+++ b/nml/actions/action2var_variables.py       Tue Sep 09 19:12:08 2014 +0200
@@ -112,6 +112,10 @@
     'current_year'         : {'var': 0x24, 'start':  0, 'size': 32},
 }
 
+varact2_globalvars60x = {
+    'CALL' : {'var': 0x7E, 'start': 0, 'size': 15, 'param_function': lambda name, args, pos, info: (expression.ConstantNumeric(0, pos), [])}, #value_function: <read var 0x1C>, param_function: <convert switch to integer> args[0].get_action2_id(feature)
+}
+
 #
 # Vehicles (features 0x00 - 0x03)
 # A few variables have an implementation that differs per vehicle type
diff -r a5e2fda0b31a regression/013_train_callback.nml
--- a/regression/013_train_callback.nml Tue Sep 09 13:21:01 2014 +0200
+++ b/regression/013_train_callback.nml Tue Sep 09 19:12:08 2014 +0200
@@ -95,7 +95,7 @@
     // no default: instead fail CB and use capacity set in properties (30)
 }
 
-switch (FEAT_TRAINS, SELF, bulk_wagon_cb_weight_switch, cargo_type_in_veh) {
+switch (FEAT_TRAINS, SELF, bulk_wagon_cb_weight_switch, CALL(bulk_wagon_cb_capacity_switch)) {
     COAL: return 18;
     FRUT: return 18;
     FRVG: return 18;