[TYPO3-english] Own extension / change uploadfolder

[Christoph Werner]

Hi all!
I´ve try to change the uploadfolder of a extension (see last lines below), but it doesnt work. Images are uploaded in fileadmin/user_uploads/ instead of the folder I want to. Does anybody have a clue?! I´ve tried deleting the tca-cachefiles, etc...
Thx!
Best
Christoph

TYPO3 8.7

TCA:

'myimage' => [
'exclude' => true,
'label' => 'LLL:EXT:extmyext/Resources/Private/Language/locallang_db.xlf:tx_extcdlist_domain_model_mylist.myimage',
'config' => \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::getFileFieldTCAConfig(
'cdimage',
[
'appearance' => [
'createNewRelationLinkTitle' => 'LLL:EXT:frontend/Resources/Private/Language/locallang_ttc.xlf:images.addFileReference'
],
'foreign_types' => [
'0' => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
],
\TYPO3\CMS\Core\Resource\File::FILETYPE_TEXT => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
],
\TYPO3\CMS\Core\Resource\File::FILETYPE_IMAGE => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
],
\TYPO3\CMS\Core\Resource\File::FILETYPE_AUDIO => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
],
\TYPO3\CMS\Core\Resource\File::FILETYPE_VIDEO => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
],
\TYPO3\CMS\Core\Resource\File::FILETYPE_APPLICATION => [
'showitem' => '
--palette--;LLL:EXT:lang/locallang_tca.xlf:sys_file_reference.imageoverlayPalette;imageoverlayPalette,
--palette--;;filePalette'
]
],
'maxitems' => 1,
'uploadfolder' => 'uploads/tx_extmyimages/',
],
$GLOBALS['TYPO3_CONF_VARS']['GFX']['imagefile_ext']
),
],