diff --git a/api/core/workflow/entities/variable_pool.py b/api/core/workflow/entities/variable_pool.py
index 4bbe9bd082..dff8505c1b 100644
--- a/api/core/workflow/entities/variable_pool.py
+++ b/api/core/workflow/entities/variable_pool.py
@@ -24,6 +24,7 @@ class ValueType(Enum):
 class VariablePool:
     variables_mapping = {}
     user_inputs: dict
+    system_variables: dict[SystemVariable, Any]
 
     def __init__(self, system_variables: dict[SystemVariable, Any],
                  user_inputs: dict) -> None:
@@ -34,6 +35,7 @@ class VariablePool:
         #     'files': []
         # }
         self.user_inputs = user_inputs
+        self.system_variables = system_variables
         for system_variable, value in system_variables.items():
             self.append_variable('sys', [system_variable.value], value)
 
diff --git a/api/core/workflow/nodes/start/start_node.py b/api/core/workflow/nodes/start/start_node.py
index 08171457fb..b897767e9d 100644
--- a/api/core/workflow/nodes/start/start_node.py
+++ b/api/core/workflow/nodes/start/start_node.py
@@ -2,7 +2,7 @@ from typing import cast
 
 from core.app.app_config.entities import VariableEntity
 from core.workflow.entities.base_node_data_entities import BaseNodeData
-from core.workflow.entities.node_entities import NodeRunResult, NodeType
+from core.workflow.entities.node_entities import NodeRunResult, NodeType, SystemVariable
 from core.workflow.entities.variable_pool import VariablePool
 from core.workflow.nodes.base_node import BaseNode
 from core.workflow.nodes.start.entities import StartNodeData
@@ -26,6 +26,12 @@ class StartNode(BaseNode):
         # Get cleaned inputs
         cleaned_inputs = self._get_cleaned_inputs(variables, variable_pool.user_inputs)
 
+        for var in variable_pool.system_variables:
+            if var == SystemVariable.CONVERSATION:
+                continue
+
+            cleaned_inputs['sys.' + var.value] = variable_pool.system_variables[var]
+
         return NodeRunResult(
             status=WorkflowNodeExecutionStatus.SUCCEEDED,
             inputs=cleaned_inputs,