1 files changed, 6 insertions, 1 deletions
diff --git a/src/tasktree.cc b/src/tasktree.cc
index ee181eb..e2e2bf6 100644
--- a/src/tasktree.cc
+++ b/src/tasktree.cc
@@ -70,12 +70,17 @@ static void concatTaskIdLists(TaskIdList& pre, TaskIdList& post) {
 
 TaskTree::TaskTree() {
   root = NULL;
+  nextid = 10;
 }
 
 TaskTree::~TaskTree() {
   // cleanup tree
 }
 
+taskid_t TaskTree::createId() {
+  return nextid++;
+}
+
 static taskid_t rootid = -1;
 
 TaskIdList TaskTree::insertAsChild(taskid_t parentid, taskid_t id, task_t data) 
@@ -329,7 +334,7 @@ std::string TaskTree::toXML()
 
   std::string xml;
   xml += "<?xml version='1.0' encoding='UTF-8'?>\n";
-  xml += "<tasktree>\n";
+  xml += "<tasktree nextid=\""+id2str(nextid)+"\">\n";
   xml += root->toXML("  ");
   xml += "</tasktree>";