diff --git a/src/widget/multilayerselecttree/multilayerselecttree.combo.js b/src/widget/multilayerselecttree/multilayerselecttree.combo.js
index 6d598af6f..ecde58b50 100644
--- a/src/widget/multilayerselecttree/multilayerselecttree.combo.js
+++ b/src/widget/multilayerselecttree/multilayerselecttree.combo.js
@@ -141,7 +141,7 @@ BI.MultiLayerSelectTreeCombo = BI.inherit(BI.Widget, {
                     eventName: BI.MultiLayerSelectTreeTrigger.EVENT_ADD_ITEM,
                     action: function () {
                         var value = self.trigger.getSearcher().getKeyword();
-                        self.combo.setValue(value);
+                        self.combo.setValue([value]);
                         self.combo.hideView();
                     }
                 }]
diff --git a/src/widget/multilayersingletree/multilayersingletree.combo.js b/src/widget/multilayersingletree/multilayersingletree.combo.js
index 2ab97b10b..37d32ea70 100644
--- a/src/widget/multilayersingletree/multilayersingletree.combo.js
+++ b/src/widget/multilayersingletree/multilayersingletree.combo.js
@@ -144,7 +144,7 @@ BI.MultiLayerSingleTreeCombo = BI.inherit(BI.Widget, {
                     eventName: BI.MultiLayerSingleTreeTrigger.EVENT_ADD_ITEM,
                     action: function () {
                         var value = self.trigger.getSearcher().getKeyword();
-                        self.combo.setValue(value);
+                        self.combo.setValue([value]);
                         self.combo.hideView();
                     }
                 }]