FileDialog and sidebar visible property

[sacinieri]

Hello, I'm using qt 5.9.7. I need to hide the side bar belonging to the classical FileDialog popup and to accomplish this task I set to false the property sidebarVisible how explained in https://doc.qt.io/qt-5/qml-qtquick-dialogs-filedialog.html , however the sidebar continues to appear.

FileDialog {
id: browseDialog
...
}

The function opening the file dialog is
function findDatabase()
{
browseDialog.sidebarVisible = false; // HERE THE SIDEBAR PROPERTY IS SET TO FALSE
browseDialog.selectFolder=selectfolder("NAMEDB3")
browseDialog.nameFilters= filefilters("NAMEDB3")
browseDialog.folder = "file:///"+inifolder("NAMEDB3")
browseDialog.selectDb = true
//browseDialog.folder = "file:///"+dialogRowBrowse.editText//inifolder("PATHDB3")
//browseDialog.folder = dialogRowSearch.editText==="" ? inifolder("NAMEDB3") : "file:///"+dialogRowBrowse.editText
browseDialog.textControl="NAMEDB3"
browseDialog.dialogReference=dialogRowSearch

    console.log("find db */*" + browseDialog.sidebarVisible);
    browseDialog.open()  // OPEN FILE DIALOG
}

Is there anyone who had the same problem ?