Override values passed to template

[egidux77]

Hello,

 

I want to override values passed to template files. In .tpl file I have variable of logged user - "$loggedinuser.firstname" I'm trying to create hook "ClientAreaPage", in dump of $vars I see:

 

[loggedinuser] => Array

(

[userid] => "84"

[firstname] => "John"

[lastname] => "Stuff"

=> "email@email.com"

)

 

I'm trying to modify firstname from "John" to "Mr. John" with hook, to display it in client area, but with no luck How to change that value and return to template. I don't want to change variables in template in case of template update.

 

Version 7.1.2

 

Thanks.