..  include:: /Includes.rst.txt
properties.multiple
-------------------

:aspect:`Option path`
    prototypes.<prototypeIdentifier>.formElementsDefinition.ImageUpload.properties.multiple

:aspect:`Data type`
    bool

:aspect:`Needed by`
    Frontend/ Backend (form editor)

:aspect:`Overwritable within form definition`
    Yes

:aspect:`form editor can write this property into the form definition (for prototype 'standard')`
    Yes

:aspect:`Mandatory`
    No

:aspect:`Default value (for prototype 'standard')`
    false (not set)

:aspect:`Description`
    ..  versionadded:: 14.2
        :changelog: feature-105708-1739721600

    If set to true, the upload field accepts more than one file. The file
    input is rendered with the HTML `multiple` attribute.

    The value of the element is then an
    :php:`\TYPO3\CMS\Extbase\Persistence\ObjectStorage` of file references
    instead of a single file reference. Custom finishers that process
    uploads must handle both cases.

    Use the :ref:`Count validator <prototypes.prototypeIdentifier.validatorsdefinition.count>`
    to limit the number of uploaded files.

    In the form editor, this property is set with the "Allow multiple upload"
    checkbox.
