SQL variable is undefined

[blinks]

I'd appreciate any assistance with the following code. When I echo the output, all the variables are correct, except that pokemon_pos is always 1, whereas it should be something like 49, which is the highest value in either tables trade_offers or pokemon_trainer for a given pokemon_trade_id.

 

$getdeclined="SELECT *
      FROM trade_offers
      WHERE pokemon_trade_id=$_GET[id]";
$declined=mysql_query($getdeclined);

while ($row = mysql_fetch_array($declined)){
$getdecusername="select max(pokemon_pos)
	from
	(
		select max(pokemon_pos) as pokemon_pos
		from pokemon_trainer
		WHERE pokemon_trainer = '$row[pokemon_trainer]'
		union all
		select max(pokemon_pos) 
		from trade_offers
		WHERE pokemon_trainer = '$row[pokemon_trainer]' AND pokemon_trade_id = $_GET[id]
	) as x";
$decusername=mysql_query($getdecusername);
while ($row2 = mysql_fetch_array($decusername)){
$newpos = $row2['pokemon_pos'];
$newpos +=1;
}
$update="UPDATE trade_offers
	 SET pokemon_pos = $newpos
	 WHERE pokemon_id = $row[pokemon_id]";
$result=mysql_query($update);
}