Incompatibility to older versions again

Hi! Except the already mentioned syntax {$var|mod:$obj->prop} I found some other syntaxes that worked in older versions of smarty but not any longer in 2.4.2 {$obj->array.index} {$obj->array[index]} in sections And combinations of them: {$obj->array[index1].index2} {$obj->array.index1[index2]} etc... Because I use smarty in an big application already shipped to several customers which design their templates on their own this is a very big problem for me if I want to upgrade smarty from now 2.3.1 to 2.4.2. And this is very recommened because I use it in security-mode. Is very any possibility to make smarty again compatible to older version? Where can I find this in the source code? I will try to solve it on my own. Thanks very much, Rainer