How to use php variable code in html block? cart.php hosting package descriptions.

[Sfed]

http://demo.whmcs.com/cart.php

Hosting packages -> Starter and Advanced packages.

 

I want to use language variables in their description since default language is no good for them.

 

I have language.php file with,

$_LANG['mylanguage'] = "Testing";

 

Then usually reading language is simple in .tpl files,

$tblhtml = '<table width="100%" bgcolor="#ccc" cellspacing="1" cellpadding="2" border="0">
   <tr height="30" bgcolor="#efefef" style="font-weight:bold;text-align:center;">
       <td width="100%">'.$_LANG['mylanguage'].'</td>
   </tr>';

 

No problem in .tpl file as this either,

<p>{$LANG.mylanguage}</p>

 

But I can not get it to work for some reason in html block,

{content}

 

Yet HTML code like <br/ > works fine in the HTML block, but not php code.

 

whmcs answer was,

'You cannot use smarty variables in the cart descriptions.

 

You may be able to create a workaround of some form, but we would be unable to support this.'