- XMLProperty* source = node->property ("source-id");
- assert (source);
-
- XMLProperty* parameter = node->property ("parameter");
- assert (parameter);
+ std::string id_str;
+ std::string parameter_str;
+ if (!node->get_property ("source-id", id_str) ||
+ !node->get_property ("parameter", parameter_str)) {
+ assert (false);
+ }