From 19f9dba9f443fb54ee78dfcd58053558daf6617f Mon Sep 17 00:00:00 2001
From: appel_c <christian.appel@psi.ch>
Date: Tue, 9 Dec 2025 21:35:22 +0100
Subject: [PATCH] fix(compare-status): add old_value arg for callback signature

---
 ophyd_devices/utils/psi_device_base_utils.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ophyd_devices/utils/psi_device_base_utils.py b/ophyd_devices/utils/psi_device_base_utils.py
index 8dd41ae..2fe5b63 100644
--- a/ophyd_devices/utils/psi_device_base_utils.py
+++ b/ophyd_devices/utils/psi_device_base_utils.py
@@ -264,11 +264,12 @@ class CompareStatus(SubscriptionStatus):
             run=run,
         )
 
-    def _compare_callback(self, value: any, **kwargs) -> bool:
+    def _compare_callback(self, old_value: any, value: any, **kwargs) -> bool:
         """
         Callback for subscription status
 
         Args:
+            old_value (any): Previous value of the signal
             value (any): Current value of the signal
 
         Returns: