Template.fabMenu.onCreated(function() { this.active = new ReactiveVar(false); }); Template.fabMenu.onRendered(function(){ const fab = this.find("paper-fab.expand-menu"); // Do a spin animation to turn the + icon into a x when active this.autorun(() => { const active = this.active.get(); const iconStyle = active ? "transition: transform 0.3s ease; transform: rotate(225deg);" : "transition: transform 0.3s ease;"; fab.updateStyles({ ["--paper-fab-iron-icon"]: iconStyle, }); }) }); Template.fabMenu.helpers({ active: function() { return Template.instance().active.get(); }, }); Template.fabMenu.events({ "tap .expand-menu": function(event, instance) { instance.active.set(!instance.active.get()); }, "tap .mini-holder paper-fab": function(event, instance) { instance.active.set(false); }, });