diff --git a/change_log.txt b/change_log.txt
index 114a0476..cf4e5d65 100644
--- a/change_log.txt
+++ b/change_log.txt
@@ -1,4 +1,7 @@
 ===== trunk  =====
+20.11.2012
+- bugfix assignGlobal() called from plugins did not work (Forum Topic 23771)
+
 13.11.2012
 - adding attribute "strict" to html_options, html_checkboxes, html_radios to only print disabled/readonly attributes if their values are true or "disabled"/"readonly" (Issue #120)
 
diff --git a/libs/sysplugins/smarty_internal_data.php b/libs/sysplugins/smarty_internal_data.php
index 5baf3b76..1d7b1d33 100644
--- a/libs/sysplugins/smarty_internal_data.php
+++ b/libs/sysplugins/smarty_internal_data.php
@@ -80,6 +80,11 @@ class Smarty_Internal_Data {
     {
         if ($varname != '') {
             Smarty::$global_tpl_vars[$varname] = new Smarty_variable($value, $nocache);
+            $ptr = $this;
+            while ($ptr instanceof Smarty_Internal_Template) {
+                $ptr->tpl_vars[$varname] = clone Smarty::$global_tpl_vars[$varname];
+                $ptr = $ptr->parent;
+            }
         }
 
         return $this;