diff --git a/CallFlowVisualizer.csproj b/CallFlowVisualizer.csproj
index ef18660..71f9d19 100644
--- a/CallFlowVisualizer.csproj
+++ b/CallFlowVisualizer.csproj
@@ -4,7 +4,7 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
-	  <Version>1.6.2</Version>
+	  <Version>1.6.3</Version>
     <Nullable>disable</Nullable>
     <Company>tishige</Company>
     <Copyright>tishige</Copyright>
diff --git a/CollectGCValuesFromJSON.cs b/CollectGCValuesFromJSON.cs
index c5005ae..1e5cb0d 100644
--- a/CollectGCValuesFromJSON.cs
+++ b/CollectGCValuesFromJSON.cs
@@ -505,8 +505,20 @@ internal static List<GenesysCloudFlowNode> CollectNode(string jsonPath)
                         break;
                     // v1.4.3
                     case "ScreenPopAction":
-                        flowNode.Desc2 = (string)action_i["inputs"][0]["value"]["text"] ?? (string)action_i["inputs"][0]["value"]["text"];
-                        break;
+
+                        //2024.4.17 fixed
+						if (action_i["inputs"].Count() > 0 && action_i["inputs"][0]["value"] != null && action_i["inputs"][0]["value"]["text"] != null)
+						{
+							flowNode.Desc2 = (string)action_i["inputs"][0]["value"]["text"];
+						}
+						else
+						{
+							flowNode.Desc2 = String.Empty;
+						}
+
+
+
+						break;
                     // v1.6.0
 					case "EvaluateScheduleAction":
 						string evaluateEmergencyGroup = (string)action_i["evaluateEmergencyGroup"] ?? (string)action_i["evaluateEmergencyGroup"];