Plugin Permissions not working as they should? :(

The permissions check is located in the boolean onCommand statement.

public boolean onCommand(CommandSender sender, Command cmd, String label,
String[] args) {
if (!Permissions.has((Player)sender , "confess.*")) {
sender.sendMessage(ChatColor.RED + "[CONFESS] You are not allowed access to this command.");
return false;
} else {
//My Plugin Code;
}

As you can see I have to cast the 'sender' to type player and for some reason this isn't working.
Is there any other way that I can convert the 'sender' to player type to see if it works?

Thanks

Sorted, thanks for the help...

EDIT by Moderator: merged posts, please use the edit button instead of double posting.