private void init() { arg.Clear(); for (int i = 0; i < 3; i++) { MathFormula f = MathFormula.FromString(MathSymbolFactory.Sizes, formulaStrings[i]); formulas[i] = f; f = f.FullTransform(null); ObjectFormulaTree t = ObjectFormulaTree.CreateTree(f); trees[i] = t; arg.Add(t); } }