diff --git a/main.py b/main.py
index fe5d00e..84f7bb4 100644
--- a/main.py
+++ b/main.py
@@ -1708,11 +1708,17 @@ async def fastapi_generate_virtual_district(network: str, req: Request) -> Chang
 # water_distribution_area 36
 ############################################################
 @app.get('/calculatedemandtonodes/')
-async def fastapi_calculate_demand_to_nodes(network: str, demand: float, nodes: list[str]) -> dict[str, float]:
+async def fastapi_calculate_demand_to_nodes(network: str, req: Request) -> dict[str, float]:
+    props = await req.json()
+    demand = props['demand']
+    nodes = props['nodes']
     return calculate_demand_to_nodes(network, demand, nodes)
 
 @app.get('/calculatedemandtoregion/')
-async def fastapi_calculate_demand_to_region(network: str, demand: float, region: str) -> dict[str, float]:
+async def fastapi_calculate_demand_to_region(network: str, req: Request) -> dict[str, float]:
+    props = await req.json()
+    demand = props['demand']
+    region = props['region']
     return calculate_demand_to_region(network, demand, region)
 
 @app.get('/calculatedemandtonetwork/')