CougarFool

Thanks for the quick response Paul. That has fixed the issue! The annoying thing is that I had to do that in another utility I wrote and forgot all about it! Nigel.

Hi everyone, I have a problem when using offset 3F00 to save the flight. My little application has a button that, when clicked, should save the flight. It works the first time and saves the flight correctly. Each subsequent click does not save the flight. I have to restart my application to get it to save again. The variables are: Private Const FltName As String = "NewAutoSave" 'save flight group Dim oSaveName As Offset(Of String) = New FSUIPC.Offset(Of String)("saveflt", &H3F04, 252) Dim oSaveCmd As Offset(Of Short) = New FSUIPC.Offset(Of Short)("saveflt", &H3F00) And the Click event is: Try If FSUIPCConnection.IsOpen Then oSaveName.Value = FltName oSaveCmd.Value = 1 'write FSUIPCConnection.Process("saveflt") lblSaved.Text = $"Saved at:{Now.ToShortTimeString}" 'update Form label End If Catch fsex As FSUIPCException MsgBox(fsex.Message) Catch ex As Exception MsgBox(ex.Message) End Try Each Click does update the 'Saved at:' label so it is executing the code above it without throwing an Exception. I have tried running the application as Administrator and there is no difference. I have tried executing the code on a BackGroundWorker but there is no differerence. I'm hoping that there is a obvious mistake I've made in my code but I can't see it! Any help would be appreciated from fellow developers! Nigel.

Thanks Paul. Downloaded fine now.

I can see the two buttons but the link for the VB one points to:

Sorry Paul, the link downloads the existing VB example. I can't see anything about MSFS in there?

Thank you very much Paul. Much appreciated. (Donation made.)

Yes please. That would be most helpful.