??? fix

Author: syntron

OMPython/ModelicaSystem.py

@@ -151,11 +151,11 @@ def _set_compatibility_helper(
             args: Any,
             kwargs: dict[str, Any],
     ) -> dict[str, Any]:
-        input_args = None
+        input_args = []
         if len(args) == 1:
-            input_args = args[0]
-        if input_args is None and pkey in kwargs:
-            input_args = kwargs[pkey]
+            input_args.append(args[0])
+        elif pkey in kwargs:
+            input_args.append(kwargs[pkey])
 
         # the code below is based on _prepare_input_data2()