$guests = Import-Csv -Path C:Usersshant_000DesktopUploadGuest_test.csv
$output = gc '.Sample Json.json' | ConvertFrom-Json
$array = New-Object System.Collections.ArrayList;

foreach($g in $guests){

    $array.Add($output);
    $a = $array[$array.Count-1];

    $a.Username = $g.'EmailAddress';
    $a.DisplayName = $g.'FirstName' + ' ' + $g.'LastName';
    $a.Password = $g.'LastName' + '123';
    $a.Email = $g.'EmailAddress';

    foreach($i in $a.ProfileProperties.Count){

        $j = $i - 1;

        $prop = $a.ProfileProperties[$j];

        if($prop.PropertyName -eq "FirstName")
            {$prop.PropertyValue = $g.'FirstName';}

        elseif($prop.PropertyName -eq "LastName")
            {$prop.PropertyValue = $g.'LastName';}

        $a.ProfileProperties[$j] = $prop;

    }

    $array[$array.Count-1] = $a;
}

$array;