Hello to all!

I've 2.017 XOOPS version installed. I've been using it since 4 years and all runs fantastic except of one thing:

When I put the cache of some module "on", all variables that I store for the main smarty template disappears.

For example:
$xoopsTpl->assign('xoops_pagetitle', 'Assigned_Title');
$xoopsTpl->assign('xoops_meta_description', 'some_description');
$xoopsTpl->assign('xoops_module_header', 'Some_meta_data');

¿Is this a general problem or only mine?

Thanks in advance,
Jorge