- var res = self.send(self.force_get_primitive_method("to_s_with_length", nat.mtype), [nat, self.int_instance(txt.bytelen)])
+ var res = self.send(self.force_get_primitive_method("to_s_full", nat.mtype), [nat, self.int_instance(txt.bytelen), self.int_instance(txt.length)])