stof_doctrine_extensions can't load in symfony

I'm trying to do a "soft-delete" for a symfony project. So i want to use StofDoctrineExtensionsBundle and i did :

stof_doctrine_extensions:
    orm:
        default:
            ...
            softdeleteable: true

doctrine:
    ...
    orm:
        filters:
            softdeleteable:
                class: Gedmo\SoftDeleteable\Filter\SoftDeleteableFilter
                enabled: true

In my config.yml.

But now i have the error message:

Unrecognized option "softdeleteable" under "doctrine.orm.entity_managers.filters"

in the error message you post seems you put the key filters under entity_managers key (as message says: under "doctrine.orm.entity_managers.filters"). fix moving the filters section under the orm key, as example:

doctrine:
    orm:
        filters:
            softdeleteable:
                class: Gedmo\SoftDeleteable\Filter\SoftDeleteableFilter
                enabled: true

Hope this help