its performSelectorOnMainThread:"displayOpenPanelWithValues:" withObject:{prompt:thePrompt, ofType:listOfExts, defaultLocation:defLocAlias, showInvisibles:invisFlag, multiplesAllowed:multiFlag, showPackageContents:packageFlag, canChooseFiles:filesFlag, canChooseFolders:foldersFlag, resolveAliases:resolveFlag, panelTitle:theTitle} waitUntilDone:true