Basic Understanding of CloudDB (and using Lists to store and manipulate data)

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CloudDB and Lists

Hi. I'm developing an application that uses CloudDB. in a class tag, there is a list which has a list as well. each element of the "class" tag is a list whose first index is the name of the room and the rest of the elements include a list of first and last names for each student in the room. I would like to allow admins to add students. but I can't seem to add values ​​inside lists by cloudDB. I thought of the "Store Value" block but if 2 admins add a user at the same time there will be loss …