Way to insert +7 into a field?

[Spring]

Hi, I have a field called experience in mysql and I want to add +7 to said field, is it possible using UPDATE or insert? If so, what's the syntax?

 

Here's what I have that doesn't work, it sets experience to 7, but won't add another 7 when clicked again.

 

 if(isset($_POST['submit'])){
    $query = "UPDATE account_info SET experience = +7 WHERE username = $name"; 
    $result = mysql_query($query) or die(mysql_error());
}

 

 

don't ask for the whole script, because you won't need it to answer that o.0

[Pikachu2000]

UPDATE account_info SET experience = experience + 7 WHERE username = $name

[Spring]

UPDATE account_info SET experience = experience + 7 WHERE username = $name

This worked perfectly, thanks a lot.