Code review comment for lp:~openerp-dev/openobject-addons/6.1-opw-577014-skh

One more thing I want to include this issue as I found one problem with mass mailing part where we needed expression instead of rendered value. This require expression part so I think this fix will create a another problem while doing from list view action and calling the wizard for multiple ids.

As I think, this can be propose solution for covering both the point when we calls a wizard from tree and form view:
1) If the action is called from tree view the value should not be rendered, If this is calling from form view the value should be replaced.