assert(value_node->get_link(i));
if(value_node->get_link(i)->is_exported())
root->set_attribute(name,value_node->get_link(i)->get_relative_id(canvas));
assert(value_node->get_link(i));
if(value_node->get_link(i)->is_exported())
root->set_attribute(name,value_node->get_link(i)->get_relative_id(canvas));