Do you see any errors in this code?

[Prince]

** the reason I ask is because at 75% it is supposed to display a red image, but it conitnues to display yellow past 75.

PHP Code:

  $inboxpms=$DB_site->query_first("SELECT COUNT(*) AS messages FROM privatemessage WHERE userid=$bbuserinfo[userid] AND folderid=0 $ignoreusers");
  if ($inboxpms < 1) {
  $pmpercent = "1"; // stop divisions by zero
  } else {
  $pmpercent = round(($inboxpms[messages] / $pmquota) * 100,2);
  }
  if ($pmpercent>50) {
  $barimg="{imagesfolder}/yellow.gif";
  } elseif ($pmpercent>75) {
  $barimg="{imagesfolder}/red.gif";
  } else {
  $barimg="{imagesfolder}/green.gif";
  }