u can add given below function to ur "sapphire/core/model/fieldtypes/Text.php
function CustomWordCount($numWords = 30, $add = '...') {
$this->value = strip_tags($this->value);
$ret = explode(' ', $this->value, $numWords + 1);
if(count($ret) <= $numWords - 1) {
$ret = $this->value;
} else {
array_pop($ret);
$ret = implode(' ', $ret) . $add;
}
return $ret;
}
and then in .ss file call,
$Content.CustomWordCount
i hope it will work for u.