simstudioai · icecrasher321 · Dec 5, 2025 · Dec 4, 2025 · Dec 4, 2025 · Dec 4, 2025
diff --git a/apps/docs/content/docs/en/variables/environment-variables.mdx b/apps/docs/content/docs/en/variables/environment-variables.mdx
@@ -66,16 +66,16 @@ To reference environment variables in your workflows, use the `{{}}` notation. W
   height={350}
 />
 
-## Variable Precedence
+## How Variables are Resolved
 
-When you have both personal and workspace variables with the same name:
+**Workspace variables always take precedence** over personal variables, regardless of who runs the workflow.
 
-1. **Workspace variables take precedence** over personal variables
-2. This prevents naming conflicts and ensures consistent behavior across team workflows
-3. If a workspace variable exists, the personal variable with the same name is ignored
+When no workspace variable exists for a key, personal variables are used:
+- **Manual runs (UI)**: Your personal variables
+- **Automated runs (API, webhook, schedule, deployed chat)**: Workflow owner's personal variables
 
-<Callout type="warning">
-Choose variable names carefully to avoid unintended overrides. Consider prefixing personal variables with your initials or workspace variables with the project name.
+<Callout type="info">
+Personal variables are best for testing. Use workspace variables for production workflows.
 </Callout>
 
 ## Security Best Practices

diff --git a/apps/sim/app/api/workflows/[id]/execute/route.ts b/apps/sim/app/api/workflows/[id]/execute/route.ts
@@ -34,7 +34,7 @@ const ExecuteWorkflowSchema = z.object({
   stream: z.boolean().optional(),
   useDraftState: z.boolean().optional(),
   input: z.any().optional(),
-  // Optional workflow state override (for executing diff workflows)
+  isClientSession: z.boolean().optional(),
   workflowStateOverride: z
     .object({
       blocks: z.record(z.any()),
@@ -92,16 +92,17 @@ export async function executeWorkflow(
       workflowId,
       workspaceId: workflow.workspaceId,
       userId: actorUserId,
+      workflowUserId: workflow.userId,
       triggerType,
       useDraftState: false,
       startTime: new Date().toISOString(),
+      isClientSession: false,
     }
 
     const snapshot = new ExecutionSnapshot(
       metadata,
       workflow,
       input,
-      {},
       workflow.variables || {},
       streamConfig?.selectedOutputs || []
     )
@@ -329,6 +330,7 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
       stream: streamParam,
       useDraftState,
       input: validatedInput,
+      isClientSession = false,
       workflowStateOverride,
     } = validation.data
 
@@ -503,17 +505,19 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
           workflowId,
           workspaceId: workflow.workspaceId ?? undefined,
           userId: actorUserId,
+          sessionUserId: isClientSession ? userId : undefined,
+          workflowUserId: workflow.userId,
           triggerType,
           useDraftState: shouldUseDraftState,
           startTime: new Date().toISOString(),
+          isClientSession,
           workflowStateOverride: effectiveWorkflowStateOverride,
         }
 
         const snapshot = new ExecutionSnapshot(
           metadata,
           workflow,
           processedInput,
-          {},
           workflow.variables || {},
           selectedOutputs
         )
@@ -769,17 +773,19 @@ export async function POST(req: NextRequest, { params }: { params: Promise<{ id:
             workflowId,
             workspaceId: workflow.workspaceId ?? undefined,
             userId: actorUserId,
+            sessionUserId: isClientSession ? userId : undefined,
+            workflowUserId: workflow.userId,
             triggerType,
             useDraftState: shouldUseDraftState,
             startTime: new Date().toISOString(),
+            isClientSession,
             workflowStateOverride: effectiveWorkflowStateOverride,
           }
 
           const snapshot = new ExecutionSnapshot(
             metadata,
             workflow,
             processedInput,
-            {},
             workflow.variables || {},
             selectedOutputs
           )

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/hooks/use-workflow-execution.ts b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/hooks/use-workflow-execution.ts
@@ -879,7 +879,7 @@ export function useWorkflowExecution() {
           selectedOutputs,
           triggerType: overrideTriggerType || 'manual',
           useDraftState: true,
-          // Pass diff workflow state if available for execution
+          isClientSession: true,
           workflowStateOverride: executionWorkflowState
             ? {
                 blocks: executionWorkflowState.blocks,

diff --git a/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/utils/workflow-execution-utils.ts b/apps/sim/app/workspace/[workspaceId]/w/[workflowId]/utils/workflow-execution-utils.ts
@@ -27,12 +27,12 @@ export async function executeWorkflowWithFullLogging(
   const executionId = options.executionId || uuidv4()
   const { addConsole } = useTerminalConsoleStore.getState()
 
-  // Build request payload
   const payload: any = {
     input: options.workflowInput,
     stream: true,
     triggerType: options.overrideTriggerType || 'manual',
     useDraftState: true,
+    isClientSession: true,
   }
 
   const response = await fetch(`/api/workflows/${activeWorkflowId}/execute`, {