const tasks = []; const urls = ["https://tech-lab.sios.jp/feed/", "https://azurecomcdn.azureedge.net/ja-jp/updates/feed/"]; for(let i = 0; i<urls.length; i++){ tasks.push(context.df.callActivity("ActivityCountBlog", urls[i])); } const results = yield context.df.Task.all(tasks); const sum = results.reduce((prev, curr) => prev + curr, 0); context.log("result:" + sum); });