diff --git a/LSL2/STPROC/LOT_SERVICES.txt b/LSL2/STPROC/LOT_SERVICES.txt
index a5e6624..d3ae235 100644
--- a/LSL2/STPROC/LOT_SERVICES.txt
+++ b/LSL2/STPROC/LOT_SERVICES.txt
@@ -603,9 +603,9 @@ end service
 
 Service GetLotCurrOperationId(LotId)
 	
-	StartTick = GetTickCount()
-	MetricName = 'GetLotCurrOperationId'
-	
+	StartTick     = GetTickCount()
+	MetricName    = 'GetLotCurrOperationId'
+	ErrorMsg      = ''
 	CurrOperation = ''
 	If LotID NE '' then
 		// Get them in sequence first
@@ -1517,3 +1517,4 @@ end service
 // Internal GoSubs
 //----------------------------------------------------------------------------------------------------------------------
 
+