diff --git a/web/src/views/Workflow/components/Properties/hooks/useVariableList.ts b/web/src/views/Workflow/components/Properties/hooks/useVariableList.ts
index 4dca4854..779174ff 100644
--- a/web/src/views/Workflow/components/Properties/hooks/useVariableList.ts
+++ b/web/src/views/Workflow/components/Properties/hooks/useVariableList.ts
@@ -35,7 +35,8 @@ const NODE_VARIABLES = {
   ],
   'http-request': [
     { label: 'body', dataType: 'string', field: 'body' },
-    { label: 'status_code', dataType: 'number', field: 'status_code' }
+    { label: 'status_code', dataType: 'number', field: 'status_code' },
+    { label: 'headers', dataType: 'object', field: 'headers' },
   ],
   'question-classifier': [{ label: 'class_name', dataType: 'string', field: 'class_name' }],
   'memory-read': [
@@ -390,11 +391,6 @@ export const useVariableList = (
         addVariable(list, keys, `${pid}_item`, 'item', itemType, `${pid}.item`, pd);
         addVariable(list, keys, `${pid}_index`, 'index', 'number', `${pid}.index`, pd);
       } else if (pd.type === 'iteration' && !pd.config.input.defaultValue) {
-        let itemType = 'object';
-        const iv = list.find(v => `{{${v.value}}}` === pd.config.input.defaultValue);
-        if (iv?.dataType.startsWith('array[')) {
-          itemType = iv.dataType.replace(/^array\[(.+)\]$/, '$1');
-        }
         addVariable(list, keys, `${pid}_item`, 'item', 'string', `${pid}.item`, pd);
         addVariable(list, keys, `${pid}_index`, 'index', 'number', `${pid}.index`, pd);
       }
diff --git a/web/src/views/Workflow/components/Properties/index.tsx b/web/src/views/Workflow/components/Properties/index.tsx
index 76fc9ad0..bd5392cd 100644
--- a/web/src/views/Workflow/components/Properties/index.tsx
+++ b/web/src/views/Workflow/components/Properties/index.tsx
@@ -95,7 +95,7 @@ const Properties: FC<PropertiesProps> = ({
           initialValue[key] = config[key].defaultValue
         }
       })
-      
+
       form.setFieldsValue({
         type,
         id: selectedNode.id,
@@ -114,16 +114,16 @@ const Properties: FC<PropertiesProps> = ({
    */
   const updateNodeLabel = (newLabel: string) => {
     if (selectedNode && form) {
-      const nodeData = selectedNode.data as NodeProperties;
+      const nodeData = selectedNode.getData() as NodeProperties;
       selectedNode.setAttrByPath('text/text', `${nodeData.icon} ${newLabel}`);
-      selectedNode.setData({ ...selectedNode.data, name: newLabel });
+      selectedNode.setData({ ...selectedNode.getData(), name: newLabel });
     }
   };
 
   useEffect(() => {
     if (values && selectedNode) {
       const { id, knowledge_retrieval, group, group_variables, ...rest } = values
-      const { knowledge_bases = [], ...restKnowledgeConfig } = (knowledge_retrieval as any) || {}
+      const { knowledge_bases = [], name: _name, description: _description, ...restKnowledgeConfig } = (knowledge_retrieval as any) || {}
 
       let allRest = {
         ...rest,
@@ -136,21 +136,23 @@ const Properties: FC<PropertiesProps> = ({
         }))
       }
 
+      const nodeData = selectedNode.getData()
+
       Object.keys(values).forEach(key => {
-        if (selectedNode.data?.config?.[key]) {
+        if (nodeData?.config?.[key]) {
           // Create a deep copy to avoid reference sharing between nodes
-          if (!selectedNode.data.config[key]) {
-            selectedNode.data.config[key] = {};
+          if (!nodeData.config[key]) {
+            nodeData.config[key] = {};
           }
-          selectedNode.data.config[key] = {
-            ...selectedNode.data.config[key],
+          nodeData.config[key] = {
+            ...nodeData.config[key],
             defaultValue: values[key]
           };
         }
       })
 
       selectedNode?.setData({
-        ...selectedNode.data,
+        ...nodeData,
         ...allRest,
       })
     }