diff --git a/phi/playground/router.py b/phi/playground/router.py
index 75ae001706..211115279c 100644
--- a/phi/playground/router.py
+++ b/phi/playground/router.py
@@ -554,8 +554,13 @@ async def run_workflow(workflow_id: str, body: WorkflowRunRequest):
         if workflow is None:
             raise HTTPException(status_code=404, detail="Workflow not found")
 
+        if body.session_id is not None:
+            logger.debug(f"Continuing session: {body.session_id}")
+        else:
+            logger.debug("Creating new session")
+
         # Create a new instance of this workflow
-        new_workflow_instance = workflow.deep_copy(update={"workflow_id": workflow_id})
+        new_workflow_instance = workflow.deep_copy(update={"workflow_id": workflow_id, "session_id": body.session_id})
         new_workflow_instance.user_id = body.user_id
 
         # Return based on the response type
diff --git a/phi/playground/schemas.py b/phi/playground/schemas.py
index 7eb470ea41..660e210a1a 100644
--- a/phi/playground/schemas.py
+++ b/phi/playground/schemas.py
@@ -68,3 +68,4 @@ class WorkflowRenameRequest(BaseModel):
 class WorkflowRunRequest(BaseModel):
     input: Dict[str, Any]
     user_id: Optional[str] = None
+    session_id: Optional[str] = None
diff --git a/phi/workflow/workflow.py b/phi/workflow/workflow.py
index 668930813b..dccab8dac9 100644
--- a/phi/workflow/workflow.py
+++ b/phi/workflow/workflow.py
@@ -321,7 +321,9 @@ def __init__(self, **data):
             self._run_parameters = {
                 name: {
                     "name": name,
-                    "default": param.default if param.default is not inspect.Parameter.empty else None,
+                    "default": param.default.default
+                    if hasattr(param.default, "__class__") and param.default.__class__.__name__ == "FieldInfo"
+                    else (param.default if param.default is not inspect.Parameter.empty else None),
                     "annotation": (
                         param.annotation.__name__
                         if hasattr(param.annotation, "__name__")