Follows Rec!3217

DaVinciExamples/python/DaVinciExamples/tupling/option_davinci_tupling_weightedrelation_trackvariables.py

@@ -72,7 +72,7 @@ def main(options: Options):
         "Asym_PT":
         F.ASYM(Functor=F.PT, Relations=ftAlg_Rels),
         "Num_tracks":
-        F.VALUE_OR(0) @ F.NINCONE(Relations=ftAlg_Rels),
+        F.VALUE_OR(0) @ F.MAP_INPUT_SIZE(Relations=ftAlg_Rels),
     })
 
     variables_all = FunctorCollection({'THOR_P': F.P, 'THOR_PT': F.PT})