I have a list of people in a dropdown list that when selected I want to update some fields in a different form.

This is an include file called chart_menu4.php that contains the correct people.

Code:
<?
	if ($_SESSION["player"]) {
?>
<h3>Charts and Performance</h3>

<?
	} if ($_SESSION["assessor"]) {
		require_once("playerlist.inc.php");
		$myPlayerList = &new PlayerList($db);
		$_SESSION["arrayPlayerChart"] = $myPlayerList->getPlayerList($_SESSION["assessorid"]);
		if (sizeof($_SESSION["arrayPlayerChart"]) > 1) {
?>
<h3>Charts and Performance</h3>

<form name="form1" method="post">
<select name="playerid" onchange="this.form.submit()">
<?
			foreach ($_SESSION["arrayPlayerChart"] as $key => $value) {
				if (!$key) continue;
?>
		<option value="<? echo($key); ?>"><? echo(htmlentities($value["name"])); ?></option>
<?
			}
?>
	</select>
</form>
<?
		}
?>

<?
	}
?>
I want the selected person to update a few fields in a new form based on their id

This is the form that contains the include file above.

Code:
<form name="form1" method="post">
<select name="playerid" onchange="this.form.submit()">
<?php

include"chart_menu4.php"; // change to your filename
$assessor_id = 0; // change to the correct value

?>
</select>
<input type="submit" name="submit2" value="Submit" />
</form>
The form to be updated is called assessor-playercreate.php

Thanks in advance