From 4cddc90f162558e1cf9a9c0b23099a6465cf5389 Mon Sep 17 00:00:00 2001
From: syntron <syntron@web.de>
Date: Tue, 4 Nov 2025 19:28:18 +0100
Subject: [PATCH] [ModelicaSystem.sendExpression] include (original) error
 message

'from ex' links the original exception but this is not always shown

see also #328
---
 OMPython/ModelicaSystem.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OMPython/ModelicaSystem.py b/OMPython/ModelicaSystem.py
index 241b9ffc..7276f038 100644
--- a/OMPython/ModelicaSystem.py
+++ b/OMPython/ModelicaSystem.py
@@ -570,7 +570,7 @@ def sendExpression(self, expr: str, parsed: bool = True) -> Any:
         try:
             retval = self._session.sendExpression(expr, parsed)
         except OMCSessionException as ex:
-            raise ModelicaSystemError(f"Error executing {repr(expr)}") from ex
+            raise ModelicaSystemError(f"Error executing {repr(expr)}: {ex}") from ex
 
         logger.debug(f"Result of executing {repr(expr)}: {textwrap.shorten(repr(retval), width=100)}")