How to make my script check if the file exist, then stop script if it does not exist.

if ($session.FileExists($remotePath))
{
    Write-Host "File $remotePath exists"
    # Now you can e.g. download file using session.GetFiles
 
    exit 0
}
else
{
    Write-Host "File $remotePath does not exist"
    exit 1
}

$remotePath = "/file/FromIEC/*"

$remotePath = "/file/FromIEC/*.*"
$remotePath = "/file/FromIEC/*.csv"
$remotePath = "/file/FromIEC/NameOfFile.csv" <-- This works, not wildcard.

if ($session.FileExists($remotePath))

$getscriptpath = $MyInvocation.MyCommand.Path
$dir = Split-Path $getscriptpath
cd $dir

$fileDate = get-date -f yyyy-MM-dd:HH:mm

$oldfile = "$dir\REMOVED.csv"
$newfile = "$dir\REMOVED\REMOVED-$fileDate.csv"
$remotepath = "/REMOVED/REMOVED/"

    Add-Type -Path "C:\Program Files (x86)\WinSCP\WinSCPnet.dll"
 
    $sessionOptions = New-Object WinSCP.SessionOptions -Property @{
        Protocol = [WinSCP.Protocol]::Sftp
        HostName = "SERVER"
        UserName = "USER"
        Password = "PASSWORD"
        SshHostKeyFingerprint = "KEY"
    }
 
    $session = New-Object WinSCP.Session

     
   try
   {
      $session.Open($sessionOptions)
        $Session.EnumerateRemoteFiles($Remotepath, "*", [WinSCP.EnumerationOptions]::None)
        }
        Finally
        {
        }