diff --git a/spf.py b/spf.py
index 8bed937..c8bd74d 100755
--- a/spf.py
+++ b/spf.py
@@ -29,8 +29,10 @@ class SPFInterpreter(lark.visitors.Interpreter):
             ligne += str(self.visit_children(toprint)[0]) + " "
         print(ligne)
 
-    # def append(self, el):
-    #     (_, toadd, var) = self.visit_children(el);
+    def append(self, el):
+        (_, toadd, var) = self.visit_children(el);
+        var_val = self.variables.get(var.value)
+        var_val.append(toadd)
 
     def declaration(self, el):
         type = el.children[0].value