diff --git a/main.py b/main.py
index b04a40b..dfb99ca 100644
--- a/main.py
+++ b/main.py
@@ -24,6 +24,7 @@ import influxdb_info
 import influxdb_api
 import py_linq
 import time_api
+import simulation
 
 JUNCTION = 0
 RESERVOIR = 1
@@ -2744,7 +2745,7 @@ async def fastapi_run_project_by_date(network: str, querydate: str) -> str:
         bg_end_time_str = bg_end_time.strftime("%Y-%m-%dT%H:%M:%SZ")
         print(f"bg_end_time_str: {bg_end_time_str}")
 
-        result = run_simulation_ex(name=network, simulation_type='realtime', start_datetime=bg_start_time_str, end_datetime=bg_end_time_str)
+        result = simulation.run_simulation(name=network, simulation_type='realtime', start_datetime=bg_start_time_str, end_datetime=bg_end_time_str)
         return result