diff --git a/main.py b/main.py
index 9a154c2..2c87b2a 100644
--- a/main.py
+++ b/main.py
@@ -164,13 +164,13 @@ async def fast_get_junction_schema(network: str) -> dict[str, dict[str, Any]]:
 
 @app.post("/addjunction/")
 async def fastapi_add_junction(network: str, junction: str, x: float, y: float, z: float) -> ChangeSet:
-    cs = {'id' : network, 'x' : x, 'y' : y, 'elevation' : z}
-    return add_junction(network, cs)
+    ps = {'id' : network, 'x' : x, 'y' : y, 'elevation' : z}
+    return add_junction(network, ChangeSet(ps))
 
 @app.post("/deletejunction/")
 async def fastapi_delete_junction(network: str, junction: str) -> ChangeSet:
-    cs = {'id' : junction} 
-    return delete_junction(network, cs)
+    ps = {'id' : junction} 
+    return delete_junction(network, ChangeSet(ps))
 
 @app.get("/getjunctionelevation/")
 async def fastapi_get_junction_elevation(network: str, junction: str) -> float: