Passing variables via URL to Formbuilder

[tosd]

I have read and experimented with anything I could find to do with passing variables to Formbuilder via a URL but I just can't seem to get it. I have coded a selflink to produce the following URL:

http://www.mysite.com.au/index.php?page ... ge=gourmet

... and I am calling Formbuilder with the following:

{cms_module module='FormBuilder' form='b_tempted' value_fld45=$smarty.get.package value_fld38=$feu_firstname}

The $feu_firstname variable is derived from a UDT that extracts the data from the Front End Users module and that is correctly passing to a hidden field in my Formbuilder form. No problem. The $smarty.get.package hook though is not working.

I also tried putting the following into a UDT:

$package = $_GET['package'];
$smarty->assign('package',$package);

When I insert {package} into the pages template it correctly prints out 'gourmet', but I cannot transfer $package to Formbuilder using:

{cms_module module='FormBuilder' form='b_tempted' value_fld45=$package value_fld38=$feu_firstname}


If anyone could help with this I would be very grateful. I am using the current version of CMS Made Simple and Formbuilder.