diff --git a/responsiveslides.js b/responsiveslides.js
index fbc331a..76a6cbb 100644
--- a/responsiveslides.js
+++ b/responsiveslides.js
@@ -35,6 +35,9 @@
 
       // Index for namespacing
       i++;
+      
+      // To make namespaceIdx available in before/after function
+      settings.namespaceIdx = settings.namespace + i;
 
       var $this = $(this),