diff --git a/src/calculation_target_reliability/router.py b/src/calculation_target_reliability/router.py
index 51ae433..3158e21 100644
--- a/src/calculation_target_reliability/router.py
+++ b/src/calculation_target_reliability/router.py
@@ -37,6 +37,7 @@ async def get_target_reliability(
     oh_session_id: Optional[str] = Query(None),
     eaf_input: float = Query(99.8),
     duration: int = Query(8760),
+    simulation_id: Optional[str] = Query(None)
 ):
     """Get all scope pagination."""
     if not oh_session_id:
@@ -56,9 +57,12 @@ async def get_target_reliability(
     #     sim_hours=duration,
     #     token=token
     # )
+    
+    if not simulation_id:
+        simulation_id = "ee777275-1ef7-48d7-8259-3fa56081ee02"
 
     results = await get_simulation_results(
-        simulation_id="de9fecba-7a87-42a9-895a-58927e13b429",
+        simulation_id=simulation_id,
         token=token
     )