Easy If sentence to change Date Format in Smarty Template for WHMCS

Hello I am using WHMCS as a billing system, which uses Smarty templates to show client area pages. WHMCS does not provide a way to format the dates according to client country, so I need to find a way to do that, modifying the client area template files. I already found a way to do it, adding this if sentence inside the template files: {if $[login to view URL] eq "Argentina"} {$datedue|date_format:"%d/%m/%y"} {elseif $[login to view URL] eq "United States"} {$datedue|date_format:"%m/%d/%y"} {else} {$datedue|date_format:"%m/%d/%y"} {/if} But as $datedue is just one of several possible variables for dates, I need to find a way in which I could set just the date format modifier inside the if sentence, and then apply that modifier to each date variable. Something like this: {if $[login to view URL] eq "Argentina"} $datelocalformat = "%d/%m/%y" {elseif $[login to view URL] eq "United States"} $datelocalformat = "%m/%d/%y" {else} $datelocalformat = "%m/%d/%y" {/if} {$datedue|date_format:"$datelocalformat"} So basically I need to know what expressions should I use instead of $datelocalformat = "%m/%d/%y" inside the if statement, and then what to use instead of {$datedue|date_format:"$datelocalformat"}.