Mar 18, 2019 10:11 AM|Yuki Tao|LINK
According to your code,it seems that you would like to achieve autocomplete cascade.
But I can't reproduce your issue,because your code so verbose and incomplete.
I highly recommend that you streamline and format your code and highlight the key points,and debugger your code,post your error message.
I suggest you could refer to this article about autocomplete cascade:
Hope my reply will be helpful to you.