diff --git a/web/app/components/workflow/nodes/_base/components/variable/utils.ts b/web/app/components/workflow/nodes/_base/components/variable/utils.ts
index 9526f77f69..98e6b5ed9a 100644
--- a/web/app/components/workflow/nodes/_base/components/variable/utils.ts
+++ b/web/app/components/workflow/nodes/_base/components/variable/utils.ts
@@ -152,7 +152,12 @@ const formatItem = (item: any, isChatMode: boolean, filterVar: (payload: Var, se
 export const toNodeOutputVars = (nodes: any[], isChatMode: boolean, filterVar = (_payload: Var, _selector: ValueSelector) => true): NodeOutPutVar[] => {
   const res = nodes
     .filter(node => SUPPORT_OUTPUT_VARS_NODE.includes(node.data.type))
-    .map(node => formatItem(node, isChatMode, filterVar))
+    .map((node) => {
+      return {
+        ...formatItem(node, isChatMode, filterVar),
+        isStartNode: node.data.type === BlockEnum.Start,
+      }
+    })
     .filter(item => item.vars.length > 0)
   return res
 }
diff --git a/web/app/components/workflow/nodes/_base/hooks/use-one-step-run.ts b/web/app/components/workflow/nodes/_base/hooks/use-one-step-run.ts
index 37755fddb6..42d8cce551 100644
--- a/web/app/components/workflow/nodes/_base/hooks/use-one-step-run.ts
+++ b/web/app/components/workflow/nodes/_base/hooks/use-one-step-run.ts
@@ -62,9 +62,12 @@ const useOneStepRun = <T>({
   const allOutputVars = toNodeOutputVars(getBeforeNodesInSameBranch(id), isChatMode)
   const getVar = (valueSelector: ValueSelector): Var | undefined => {
     let res: Var | undefined
-    const targetVar = allOutputVars.find(v => v.nodeId === valueSelector[0])
+    const isSystem = valueSelector[0] === 'sys'
+    const targetVar = isSystem ? allOutputVars.find(item => !!item.isStartNode) : allOutputVars.find(v => v.nodeId === valueSelector[0])
     if (!targetVar)
       return undefined
+    if (isSystem)
+      return targetVar.vars.find(item => item.variable.split('.')[1] === valueSelector[1])
 
     let curr: any = targetVar.vars
     valueSelector.slice(1).forEach((key, i) => {
diff --git a/web/app/components/workflow/nodes/http/panel.tsx b/web/app/components/workflow/nodes/http/panel.tsx
index b7f749e886..0a214d142a 100644
--- a/web/app/components/workflow/nodes/http/panel.tsx
+++ b/web/app/components/workflow/nodes/http/panel.tsx
@@ -160,7 +160,7 @@ const Panel: FC<NodePanelProps<HttpNodeType>> = ({
             />
             <VarItem
               name='headers'
-              type='sting'
+              type='object'
               description={t(`${i18nPrefix}.outputVars.headers`)}
             />
           </>
diff --git a/web/app/components/workflow/types.ts b/web/app/components/workflow/types.ts
index 20cd9946d0..67e20139b7 100644
--- a/web/app/components/workflow/types.ts
+++ b/web/app/components/workflow/types.ts
@@ -157,6 +157,7 @@ export type NodeOutPutVar = {
   nodeId: string
   title: string
   vars: Var[]
+  isStartNode?: boolean
 }
 
 export type Block = {