diff --git a/product/ERP5Form/MatrixBox.py b/product/ERP5Form/MatrixBox.py
index 62382703f79ce3ab16becdce9404c57f2a83d864..d5e9a8ee3fc4138fcb004d2ce9dcff520f6ab160 100755
--- a/product/ERP5Form/MatrixBox.py
+++ b/product/ERP5Form/MatrixBox.py
@@ -242,6 +242,7 @@ class MatrixBoxWidget(Widget.Widget):
                   #LOG("Cell",0,str(kw))
                   attribute_value = my_field.get_value('default', cell = cell,
                                     cell_index = kw, cell_position = (i,j, k))
+                  REQUEST['cell'] = cell
                   cell_body += str(my_field.render(value = attribute_value, REQUEST = REQUEST, key = key))
               list_body = list_body + \
                     ('<td class=\"%s\">%s</td>' % (td_css, cell_body))