Hello Community - my second post as I'm very stuck trying to integrate a range-slider in React that will be friends with the progress() method to move through the timeline! I can pass around the value I need to my slider, but getting undefined errors when I try to pass this over to this.tl.progress(this.state.value) etc?   I've read through several posts, but none look very current...in fact most are going back 2-3 years and the react-way has changed! Looking through the 'getting start