Need help with dcaconfig.php in Contao 4.4 LTS

Hello! I have to do some small customizations in backend.
In Contao 3.5 I was using dcaconfig.php

for example to set default values:

<?php
$GLOBALS['TL_DCA']['tl_content']['fields']['size']['default']['3'] = 'crop';
$GLOBALS['TL_DCA']['tl_content']['fields']['size']['default']['0'] = 230;
$GLOBALS['TL_DCA']['tl_content']['fields']['size']['default']['1'] = 230;
$GLOBALS['TL_DCA']['tl_content']['fields']['fullsize']['default'] = true;
?>

I read that in Contao 4.4 i should put this file into /app/Resources/contao/dca/

But it has no effect! Nothing changes!
I can place anything there:
<?php
error ! error ! error
?>

and nothing happens! File is not being loaded.

Should i edit any other config file also?

Thanks in advance.

You must clear the Symfony cache when making changes to configuration files.

ok... thanks

I didn't know how to do this but I found this option in contao-manager.phar.php -> maintenance -> rebuild production cache


now it works :)