The @SelectTreeItem command works perfectly for me. What you have to do is to go just one step at a time. And Thank goodness, we have been provided with Writeln debugging tool that helps you step by step.

Put the followingind Code in Command Button element entry event.

var vSuccess as Int

if Price <> "" then

     {
           @save

           vSuccess = @SelectTreeItem ("NewSesameapplication!Forms!Search/Update!NewDatabase!NewForm")
     }

if vSuccess = 1 then
     Writeln ("Mission Successful")


Price is an element in my  form, you can also avoid the @save command you wish to.   Just one tree item at a time. This can be tested in Preview of sdesigner unlike x-family commands. I hope this helps.