Whistler 3rd level

var iFileName = "Bard- College of the Whistlers[by Domannaa].js";
RequiredSheetVersion(12.999);

AddSubClass("bard", "college of the whistlers", {
    regExpSearch : /^(?=.*\bwhistler?\b).*$/i,
    subname : "College of the Whistlers",
    fullname : "Whistler",
    source : ["HB", 0],
    attacks : [1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
    features : {
        "subclassfeature3" : {
            name : "Sword of the Little Folk",
            source : ["HB", 0],
            minlevel : 3,
            description : desc([
                    "When I wield a simple weapon, I can use my Bardic Inspiration die",
                    "This replaces the damage dice of the weapon"
            ]),
            calcChanges : {
                atkAdd : [
                    function (fields, v) {
                        if (classes.known.bard && classes.known.bard.level && (/simple/i).test(v.theWea.type)) {
                                var aBardDie = function (n) { return n < 5 ? 6 : n < 10 ? 8 : n < 15 ? 10 : 12; }(classes.known.bard.level);
                                try {
                                        var curDie = eval_ish(fields.Damage_Die.replace('d', '*'));
                                } catch (e) {
                                        var curDie = 'x';
                                };
                                if (isNaN(curDie) || curDie < aBardDie) {
                                        fields.Damage_Die = '1d' + aBardDie;
                                };
                        };
                    },
                    "When a Whistler wields a simple weapon, they can choose to use their bardic inspiration die instead of the weapon's damage dice",
                ],
            },
        },
        "subclassfeature3.2" : {
            name : "Encouraging Presence",
            source : ["HB", 0],
            minlevel : 3,
      action : ["reaction", ""],
            description : desc([
                "Whenever a creature rolls an inspiration die gained from me",
                "they also regain an equal amount of hit points to the result",
                "Additionally, I gain a new method of using my bardic inspiration",
                "As a reaction when a creature with 30ft rolls an attack, check or save",
                "I can immediately grant them a Bardic Inspiration die",
                "The creature must use the die on the roll that triggered this reaction",
            ]),
        },
        "subclassfeature14" : {
            name : "Hidden Depths",
            source : ["HB", 0],
            minlevel : 14,
            description : desc([
                "When I am reduced to 0hp, I can spend an inspiration die",
                "When I do so, I regain HP equal to the roll + my Charisma modifier",
            ]),
        },
    },
});