..caution::

The used ``.`` notation is just a

:ref:`Symfony convention<service-naming-conventions>` to make parameters

easier to read. Parameters are just flat key-value elements, they can't be

organized into a nested array

..note::

You can only set a parameter before the container is compiled. To learn

Array Parameters

Parameters do not need to be flat strings, they can alsobe arrays. For the XML

format, you need to use the ``type="collection"`` attribute for all parameters that are

arrays.

Parameters do not need to be flat strings, they can alsocontain array values.

For the XMLformat, you need to use the ``type="collection"`` attribute for

all parameters that arearrays.

..configuration-block::

* Don't forget to look at the more verbose:doc:`conventions` document for

more subjective naming considerations.

.. _service-naming-conventions:

Service Naming Conventions