Trouble getting template vars into php in version 6 beta

[deltatech]

I am trying to modify a template using code that always worked in version 5 and before but doesn't work in 6.

 

This sample from the documentation doesn't work, it crashes.

{php}
$userid = $this->_tpl_vars['clientsdetails']['userid'];
echo 'User ID is '. $userid ;
{/php}

 

This code is working now in 5.3.13 but crashes in 6.0

{php}
$cldetails=$this->get_template_vars("clientsdetails");
echo 'Users ID is '. $cldetails['userid'];
{/php}

 

What am I doing wrong? This is in /templates/mytemplate/clientareaproductdetails.tpl

[Alistair]

The following variable would output the user ID:

 

{$clientsdetails.userid}