Teriwap how to add the code clean cookies on this xtscript?

<!--parser:xtscript-->
# Get the username from the form
get username

# Check for a cookie or default to the entered name from the form
var $username = call cookie::get $name=mycookie;$default=$username

# If the username is set refresh or create the cookie and output the username
if $username
call cookie::set $name=mycookie; $val=$username; $expire=99999999;$force_current=1;
print <span class="">$username</span>
else

# Show the form
var $self=<xt:url />
print {{
<form action="$self" method="post">
<input name="username" />
<input type="submit" />
</form>}}
endif
<!--/parser:xtscript-->

 Graham Teriwap To delete a cookie

Also if I remember right setting the $expire to -1 will also clear a cookie

 Teriwap Graham ok, thank you , I want to try first