diff --git a/sample_afar_v1.m b/sample_afar_v1.m
index b67a9d5..499aa4b 100644
--- a/sample_afar_v1.m
+++ b/sample_afar_v1.m
@@ -18,6 +18,15 @@
 FETA_dir  = '<PATH TO AFARTOOLBOX>/FETA/';
 AU_dir    = '<PATH TO AFARTOOLBOX>/AU_detector/';
 
+
+% add all modules to matlab environment 
+
+addpath(genpath(zface_dir))
+addpath(genpath(FETA_dir))
+addpath(genpath(AU_dir))
+
+
+
 % Your directory of videos that need to be processed and where they should be saved
 video_dir = './test_video';
 out_dir   = './test_out';