Shoutbox

Hi man, i need help....:I make this function:

function SetDataPatch(string){
var newstring =""
for (var i=0;i<string.length;i++){
newstring += "\x" + Hex(string.charCodeAt(i)) + "\x00"}
Debug.Trace(newstring)
return newstring}}

but plus found this error,this is in italian but i'll try to translate it in english:

Lo script è stato fermato(the script has been stopped)
Errore: Prevista cifra esadecimale.(Error: expect digit hex)
       Linea: 43 Codice: -2146827265(line:43 Code: -2146827265)

i need to make a string like this "\xFF\x00\xFC" CAN SOMEONE HELP ME PLEASE??? Sorry for my english