diff --git a/unilabos_msgs/action/LiquidHandlerOscillationBiomek.action b/unilabos_msgs/action/LiquidHandlerOscillationBiomek.action
index dda1ac1..5e37744 100644
--- a/unilabos_msgs/action/LiquidHandlerOscillationBiomek.action
+++ b/unilabos_msgs/action/LiquidHandlerOscillationBiomek.action
@@ -2,5 +2,5 @@ int32 rpm
 int32 time
 
 ---
-
+bool success
 ---
diff --git a/unilabos_msgs/action/LiquidHandlerPauseBiomek.action b/unilabos_msgs/action/LiquidHandlerPauseBiomek.action
index 46fd65c..7746db7 100644
--- a/unilabos_msgs/action/LiquidHandlerPauseBiomek.action
+++ b/unilabos_msgs/action/LiquidHandlerPauseBiomek.action
@@ -1,5 +1,5 @@
 int32 time
 
 ---
-
+bool success
 ---