if you don’t say more about your problem, it’s gonna be hard to help…
Do it in this way:
You has to put the “make a list”-block in between.
Generally before appending to Firebase you should make sure that you the the Tag has be a List.
So First you should store an empty list in Firebase
When Screen Initialize
Call Firebase_Databse1 .Append Value
Tag = (Your Tag in which you are appending)
Value = create empty list
You should not create an empty list every time only the first time you create the tag store an empty list or else your all your data would be lost