[Plugin: Smarty for WordPress] Passing multiple variables through admin panel

I am using your WordPress plugin “Smarty for WordPress”, and I am developing a WordPress site for another company. That company does not want to touch the PHP WordPress code, but they want to use Smarty templates. I have seen that with your plugin I can pass a single variable using the following code:

[smarty-display tpl=template_prueba.tpl name=name value = “Roman”]

This is a very useful way to pass variables through the admin panel, but how can I pass more than one? If my client wants to pass more than one variable, do they have to write code into index.php file?

Could I maybe pass an array, something like this? (doesn’t work):

[smarty-display tpl=template_prueba.tpl name=Variables value=”array(‘name’ => ‘Roman’, ‘surname’ => ‘Hervas’)”]

and the template:

{* Smarty *}
Hello {$Variables.name} – {$Variables.surname}, welcome to Smarty

Thank you very much.