[FLOW3-general] Clear Settings Cache from Application (not CLI)

[Kim]

Hi List Members

I build an Settings Editor (Like the ConstantEditor in Typo3 CMS) an i 
need to clear the Settings Cache from the saveAction.

i try it with:
$this->cacheManager->flushCaches();

nothing happens!

from CLI its necessary to use the modifier "-- force"

This option ist not available in the "cacheManager"!!

do anyone know what to do?

Greetings
Kim