The ITX template class ignores the parameters given to a 
callback function in the template. (the array remains 
empty). 
 
I fixed this already in my local copy. 
 
Replace in buildFunctionList() the while-loop (line 590 
and on) with following code: 
 
  while ('' != $head && $args2 = $this->getValue($head, 
',')) { 
                $arg2 = trim($args2); 
                $args[] = ('"' == $arg2{0} || "'" == 
$arg2{0}) ? substr($arg2, 1, -1) : $arg2; 
                if ($arg2 == $head) 
                    break; 
                $head = substr($head, strlen($arg2) + 1); 
            } 
 
 
This should work. (but better read twice. I did not check 
for side effects) 
 
Tim