dont know why im getting parse error

[qo2o]

foreach($theset as $letter){
    if($letter == "#"): $letter = "[0-9]";
    $thesequence = "/^$letter/i";
    if(preg_match($thesequence, $thename)){
        if($letter == "[0-9]"): $letter = "num";
        ${$letter}[] = $thename;
    }
}

this is a segment of the whole code, im getting an error on the first closing bracket }, anyone know why?

edit: changed one thing, problem changed though =o

[Weedpacket]

Lose those colons.

[qo2o]

ah, thank ye sir