bindconfirm的属性值不支持{{ }}吗？

这里的condirm点击后报错：

Only digits (0-9) can be put inside [] in the path string: today[undefined].hiddenbutton; [Component] Event Handler Error @ pages/alarm/alarm#bound confirm0

Error: Only digits (0-9) can be put inside [] in the path string: today[undefined].hiddenbutton

支持的。