diff --git a/examples/generate-invoice-invoice.py b/examples/generate-invoice-invoice.py
new file mode 100644
index 0000000..b843578
--- /dev/null
+++ b/examples/generate-invoice-invoice.py
@@ -0,0 +1,41 @@
+import facho.fe.form as form
+from facho.fe import fe
+from datetime import datetime
+
+def extensions(inv):
+    security_code = fe.DianXMLExtensionSoftwareSecurityCode('', '123', inv.invoice_ident)
+    return [security_code]
+
+def invoice():
+    inv = form.Invoice()
+    inv.set_period(datetime.now(), datetime.now())
+    inv.set_issue(datetime.now())
+    inv.set_ident('ABC123')
+    inv.set_supplier(form.Party(
+        name = 'facho-supplier',
+        ident = 123,
+        responsability_code = 'No aplica',
+        organization_code = 'Persona Natural'
+    ))
+    inv.set_customer(form.Party(
+        name = 'facho-customer',
+        ident = 321,
+        responsability_code = 'No aplica',
+        organization_code = 'Persona Natural'
+    ))
+    inv.add_invoice_line(form.InvoiceLine(
+        quantity = 1,
+        description = 'producto facho',
+        item_ident = 9999,
+        price_amount = 100.0,
+        tax = form.TaxTotal(
+            tax_amount = 0.0,
+            taxable_amount = 0.0,
+            subtotals = [
+                form.TaxSubTotal(
+                    percent = 19.0,
+                )
+            ]
+        )
+    ))
+    return inv