htacess help?

[Newton]

Gents

IS this the correct code to put into an htacess file to do a 301 redirect so that all iphone traffic will redirect to url.ext for example and keep the affiliate code in place?

RewriteCond %{HTTP_USER_AGENT} ^.*iphone.*$ [NC]
RewriteRule ^(.*)$ http:/url.ext/?code=000&code=000 [R=301,L]

?code=000&code=000 is the affiliate code

Thanks in advance