tocoloro

I have the following code, catching the FileDialogStartEvent and checking if it should be displayed or not under isServerBusy() condition. However, i can't manage to avoid the File Upload to display: Public boolean onFileDialogStartEvent(FileDialogStartEvent fileDialogStartEvent) { if (isServerBusy()) { return false; } return true; } when serverBusy()= true , the File Upload Dialog is still displayed , even when it is returning false . What Am I missing here? (Firefox 74.0 (64-bit) , Ubuntu 16) ...