Sum custom fields

gistfile1.txt

new Trellinator().board("TEST").lists().each(function(list)
{
    var listcount = 0;

    list.cards().each(function(card)
    {
        try
        {
            listcount += parseInt(card.customFieldValue("Num"));
        }

        catch(e)
        {
        }
    });

    if(parts  = /(.+) \([0-9]+\)/.exec(list.name()))
    {
        list.setName(parts[1]+" ("+listcount+")");
    }

    else
    {
        list.setName(list.name()+" ("+listcount+")");
    }
});

console.log("All Done");