diff --git a/ApiWorksheetFunction_QUARTILE_INC.js b/ApiWorksheetFunction_QUARTILE_INC.js
new file mode 100644
index 0000000..4b77a42
--- /dev/null
+++ b/ApiWorksheetFunction_QUARTILE_INC.js
@@ -0,0 +1,21 @@
+builder.CreateFile("xlsx");
+const oWorksheet = Api.GetActiveSheet();
+
+var valueArr1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
+var quart = 1;
+
+// Place the numbers in cells
+for (var i = 0; i < valueArr1.length; i++) {
+  oWorksheet.GetRange("A" + (i + 1)).SetValue(valueArr1[i]);
+}
+
+//method params
+var array = oWorksheet.GetRange("A1:A12");
+
+var oFunction = Api.GetWorksheetFunction();
+var ans = oFunction.QUARTILE_INC(array, quart); //0...1 inclusive
+
+oWorksheet.GetRange("C1").SetValue(ans);
+
+builder.SaveFile("xlsx", "QUARTILE_INC.xlsx");
+builder.CloseFile();