Example of adding a Warlock Pact Boon to MPMB's CharSheets using a function

AddWarlockPactBoon.js

var AddWarlockPactBoon = function(boonName, boonObj) {
	var warInv = ClassList.warlock.features["pact boon"];
	if (!warInv || (warInv.choices.indexOf(boonName) !== -1 && warInv[boonName.toLowerCase()].source && boonObj.source && warInv[boonName.toLowerCase()].source.toSource() === boonObj.source.toSource())) return; // the exact same thing is being added again, so skip it
	var useName = boonName;
	var suffix = 1;
	while (warInv.choices.indexOf(useName) !== -1) {
		suffix += 1;
		useName = boonName + " [" + suffix + "]";
	};
	warInv.choices.push(useName);
	warInv[useName.toLowerCase()] = boonObj;
};

AddWarlockPactBoon("Pact of the Star Chain", {
    name : "Pact of the Star Chain",
    source : ["HB", 0],
    description : "\n   " + "My patron grants me an item of power which disappears when I die" + "\n   " + "While it is on my person, I can cast Augury as a ritual (PHB 215)" + "\n   " + "Additionally, once per short rest, I can get advantage on an Intelligence check" + "\n   " + "If I lose this item I can perform a 1-hour ceremony to get a replacement",
    usages : 1,
    recovery : "short rest",
    spellcastingBonus : {
        name : "Pact of the Star Chain",
        spells : ["augury"],
        selection : ["augury"],
        firstCol : "(R)"
    }
});