diff --git a/build_make.py b/build_make.py
index 79aa6df..814d32f 100644
--- a/build_make.py
+++ b/build_make.py
@@ -2,12 +2,12 @@ import os
 import glob
 import shutil
 
-def filepath_mass_changer(Version ,path ,apapath):
+def filepath_mass_changer(Version ,path ,apapath, extension="txt"):
     f = glob.glob(os.path.join(path,"*.txt"))
     for filename in f:
         s = os.path.basename(filename)
         os.rename(filename, os.path.join(path, Version + '_' + s ))
-        f = glob.glob(os.path.join(path,"*.txt"))
+        f = glob.glob(os.path.join(path,"*."+extension))
     for filename in f:
         s = os.path.basename(filename)
         shutil.copy2(os.path.join(path,s), apapath)
\ No newline at end of file