What i dont understand is why your getting data returned at all, because you have no where set a value for $HTTP_POST_VARS['datasss']
and i think your problem lies with stripslashes/addslashes
when you create a variable unless you have told php to treat quotes and single quotes as a string, php will automatically add slashes to them
eg.
$var = "she said "don't do that""; // will give you an error unexpected T_STRING
this is because php thinks your trying to coplete the creation of the variable
$var = "she said \"don't do that\""; // will result in no errors because you have told php to treat them as part of your string
when creating strings in a form php automatically adds them when you try and show them on your page
so if you had something like value=i said "this to her"
<?
echo $HTTP_POST_VARS["data"]; // would show - i sed \"this to her\"
?>
so if you dont want the slashes there try using this
<?
echo stripslashes($HTTP_POST_VARS["data"]);
?>
hth