How to put a notification mark in the view icon that is in the botom navigation bar

Hi, I’m making an app where the user can sen or recieve messages form another user, What I need is when a user recive a message the view in tha bottom navigator bar make a mark that there is a new message, hopefully with the number of new messages

thanks for the help

The only way would be to use the Display Name of that view with an expression so that it looks like this:
Messages (0), or Messages (2), something like that

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Thanks very much

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