diff --git a/DesktopEditor/doctrenderer/docbuilder.com/test/onescript/test.os b/DesktopEditor/doctrenderer/docbuilder.com/test/onescript/test.os
new file mode 100644
index 0000000000..db6f33177e
--- /dev/null
+++ b/DesktopEditor/doctrenderer/docbuilder.com/test/onescript/test.os
@@ -0,0 +1,28 @@
+doctype = ".docx";
+resultPath = "result.docx";
+
+oBuilder = New COMObject("ONLYOFFICE.Builder");
+
+oBuilder.Initialize();
+oBuilder.CreateFile(doctype);
+
+oContext = oBuilder.GetContext();
+oScope = oContext.CreateScope();
+
+oGlobal = oContext.GetGlobal();
+
+// optional is not working
+oApi = oGlobal.GetProperty("Api");
+oDocument = oApi.Call("GetDocument",,,,,,);
+oParagraph = oApi.Call("CreateParagraph",,,,,,);
+oContent = oContext.CreateArray(1);
+
+oParagraph.Call("SetSpacingAfter", 10, Ложь,,,,); // err?
+oParagraph.Call("AddText", "Hello from COM -> OS!",,,,,);
+oContent.Set(0, oParagraph);
+oDocument.Call("InsertContent", oContent,,,,,);
+
+oBuilder.SaveFile(doctype, resultPath);
+oBuilder.CloseFile();
+
+oBuilder.Dispose();