From b2d74889394d6c480df7965af151273afa249462 Mon Sep 17 00:00:00 2001
From: Alireza <ar.sedghi@gmail.com>
Date: Tue, 12 Sep 2023 22:23:46 -0400
Subject: [PATCH] fix bug

---
 extensions/cornerstone-dicom-seg/src/commandsModule.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extensions/cornerstone-dicom-seg/src/commandsModule.ts b/extensions/cornerstone-dicom-seg/src/commandsModule.ts
index 6b411664eaa..2bd234a560b 100644
--- a/extensions/cornerstone-dicom-seg/src/commandsModule.ts
+++ b/extensions/cornerstone-dicom-seg/src/commandsModule.ts
@@ -119,6 +119,7 @@ const commandsModule = ({
         loadFn: async () => {
           // Todo: handle adding more than one segmentation
           const viewport = getTargetViewport({ viewportId, viewportGridService });
+          const displaySetInstanceUID = viewport.displaySetInstanceUIDs[0];
 
           const segmentation = segmentations[0];
           const segmentationId = segmentation.id;