diff --git a/ApiWorksheetFunction_NOT.js b/ApiWorksheetFunction_NOT.js
new file mode 100644
index 0000000..96ed2f5
--- /dev/null
+++ b/ApiWorksheetFunction_NOT.js
@@ -0,0 +1,14 @@
+builder.CreateFile("xlsx");
+const oWorksheet = Api.GetActiveSheet();
+
+oWorksheet.GetRange("A1").SetValue(12);
+
+var condition = A1 < 100;
+
+var oFunction = Api.GetWorksheetFunction();
+var ans = oFunction.NOT(condition);
+
+oWorksheet.GetRange("C1").SetValue(ans);
+
+builder.SaveFile("xlsx", "NOT.xlsx");
+builder.CloseFile();