diff --git a/src/core/alias.js b/src/core/alias.js
index 5ea9ef1e0..bcb82eef0 100644
--- a/src/core/alias.js
+++ b/src/core/alias.js
@@ -416,7 +416,8 @@
         "&": "&",
         "\"": """,
         "<": "&lt;",
-        ">": "&gt;"
+        ">": "&gt;",
+        " ": "&nbsp;"
     };
     BI.htmlEncode = function (text) {
         return BI.isNull(text) ? "" : BI.replaceAll(text + "", "&|\"|<|>|\\s", function (v) {
diff --git a/src/widget/multitree/multi.tree.combo.js b/src/widget/multitree/multi.tree.combo.js
index 89ce0949d..e12d4fa2a 100644
--- a/src/widget/multitree/multi.tree.combo.js
+++ b/src/widget/multitree/multi.tree.combo.js
@@ -85,7 +85,7 @@ BI.MultiTreeCombo = BI.inherit(BI.Single, {
                         };
                         self.trigger.getSearcher().setState(val);
                         self.numberCounter.setButtonChecked(val);
-                        self.fireEvent(BI.MultiTreeCombo.EVENT_CLICK_ITEM);
+                        self.fireEvent(BI.MultiTreeCombo.EVENT_CLICK_ITEM, self.combo.getValue());
                     }
                 }, {
                     eventName: BI.MultiTreePopup.EVENT_CLICK_CONFIRM,