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Function to add a bus in the specified destination layer. The destination layer is determined by its Layer object. For example, this.parent specifies the parent layer of the script module as destination layer. The bus to be added is determined by its Bus object. You can use getBus or findBusses to determine the bus. The new bus will be added behind the existing busses. To insert a bus at a specific position in the destination layer, use insertBus instead.

An Element object can only have one parent. It cannot be child of multiple parents. Therefore, an Element object that you retrieved from the running plug-in instance must be removed before it can be inserted again. The Element objects that you retrieve through loadPreset or loadPresetAsync can be inserted freely, because these functions create a copy of the Element objects when reading them.

Available in: Controller.


busThe Bus object of the bus that you want to append.Bus


To explore the following script:

  1. Download Program.vstpreset.
  2. Drag the preset on the MediaBay to import it to the user folder for VST presets.
  3. Create an empty program and add a script module.
  4. Paste the script into the text editor of the script module and execute the script.


-- append bus from Program.vstpreset into the current program
-- get the file path for user VST presets
path = getUserPresetPath()
-- load VST preset
loadedProgram = loadPreset(path.."/Program/Program.vstpreset")
-- get the first bus from the loaded program
bus = loadedProgram:getBus()
-- append bus
if bus then


    1. Please reread. Thanks!