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hi everyone my name is Mark Mohicans from Big Mountain studio and this is the third video in a series where we are creating reusable pop-ups and we've created the reusable pop-up we've pulled it up from different view controllers a couple of different ways and then we're also passing in data to the pop-up to tell it whether it be a date pop-up or a select time pop-up now what we're going to do is when we click on this button where it says save time we want this label to be populated or when we click on the select date and save date we want this label here to be populated so I'm going to teach you three different ways to pass data back from the pop-up to this view controller that's opening it and in this video we're gonna focus on one of the ways and that is using notifications or the Notification Center so let's get started the first thing we want to do is go into our pop-up and here's our button when we save the date or save the time I called it save date because that's all we had at first but now we have save time too so that's what this action is here and here we want to pass the data back of whatever date is selected or whatever time is selected but when we populate the label now the label you know you set the property to a string the label dot X property is a string property but we're gonna get our date from a UI date picker which just gives us a date object so what we'll need to do is we'll need to take that date and format it for either a date in a string format or a time in a string format so what I'm going to do is I'm going to start off by creating a couple of properties here one for the formatted date and one for the formatted time okay we'll start with the formatted date and it will be a string that's what we want to return and for the getter what we need to do first is we need to create a date formatter object and tell it what format we want it to be so you're gonna learn a little bit about for matters here date for matters and this will be a date formatter and then we have to tell it what format we want so what we want to do is we want to set a date style for this and you have a couple different choices for dates the one we're gonna go with is just the medium date okay now what do we do with this formatter well the formatter has a dot string function and that's what we're going to use right here so it returns a string representation of the given date formatted using the receivers current settings and the receiver is this...