I need help with globals

Hi, I am developing my first plugin and have hit my first (semi)impassible road block and it involves the use of globals… I just don’t get it and could really need some help. Thanks a lot!

$tdzWitCount = 1;

add_filter(‘bloginfo’, ‘tdz_add_wit’, 10, 2);

function tdz_add_wit($info, $show) {
global $tdzWitCount;
if (($show == ‘name’) && ($tdzWitCount == 1)) {
$info = $info . ” ” . “now has wit.”;
$tdzWitCount++;
}
return $info;
}

I also tried:

add_filter(‘bloginfo’, ‘tdz_add_wit’, 10, 2);

function tdz_add_wit($info, $show) {
static $count = 1;
if (($show == ‘name’) and ($count == 1)) {
$info = $info . ” ” . “is infinitely resourceful.”;
$count == ($count + 1);
}
return $info;
}