@causerino Hi! I know it’s been a while, but I’ve done this as well. Make sure the SparklineIDs name corresponds with the slug name provided by CoinMarketCaps API. For example, I wanted to add Elrond’s eGLD. The ID for this token is 6892, while the slug is elrond-egld. As this includes a hyphen symbol, it needs to be surrounded by quote marks. So my addition looks like this: 'elrond-egld': 6892, I also made 2 symbols, which are not required but look pretty.