The backslash is being duplicated

Hello, I want to upload this to a Firebase Database
So, these are my blocks

The problem is that when I go to Firebase the app submits something like this:

So the backslashes \ are being duplicated when they are uploaded. I really need to upload the date in that format. Can anyone help me?

Why will you need to upload date like that? Why not just as it’s normally written, 02/22/1998.
Even if back slashes will be added in firebase for protection, you’ll get exactly what you uploaded when you call for it.

I have an app for Android that was previously created on another way, and it needs the date in that way. I know thunkable X can create an apk but the app is laggy on Android devices. Thats why I won´t use Thunkable X for Android devices but only for iOS devices