diff --git a/include/interfaces.h b/include/interfaces.h
index 733e3f3..3aac4f0 100644
--- a/include/interfaces.h
+++ b/include/interfaces.h
@@ -307,9 +307,16 @@ public:
         // download binary file down into device controller
 
     virtual bool dc_updatePrinterTemplate(enum FileTypeJson type,
-                                          int templateNr,
-                                          QString const &fname) const = 0;
-                       
+                                          QVector<int> templateIdx,
+                                          QVector<QString> fnames,
+                                          QString br,
+                                          QString serial) const = 0;
+
+    virtual bool dc_printTemplate(enum FileTypeJson type,
+                                  QVector<int> templateIdx,
+                                  QString br,
+                                  QString serial) const = 0;
+
     virtual void dc_autoRequest(bool on)  const =0;
         // on = true:  select that all READ-Requests are sent automatically 
         // on = false: select that all READ-Requests are sent manually one by one