Help with the dict family!

hi guys,
im running into some confusion with the new dict objects. the problem is that the syntax isnt explained very well (or maybe i miss something? my english is ok but not the best...)
i ve got a pretty big synth patch. in each oscillator bpatcher ive got 2 multisliders with variable numbers of sliders. ive already set up an pattr system for the whole ui but i want to have my own presets for the multisliders (they are used to create wavetables), so i thought dict is the way to go!?
the preset should contain both multisliders and i want to give each preset a unique name in the moment of saving, for later recall. but it must be possible to recall the multislider presets seperatly from the rest of the ui. and finally when i recall a preset from pattrstorage i want to recall the multislider presets but not for the individual multisliders.
i thought it must be possible to create keys dynamiclly, but it seems like that they must be predefined? is that true?
as my first step i created a dict.pack for the 2 multisliders. but how can i name this packed lists in the moment of creation and how can is store loads of these.
when i load the data from the dict.pack into a dict it works fine, but when i want to add another preset it doesnt add it, it replaces the old preset!
or should i forget dict and find my way with pattrstorage (for me this seems to complicated because of the naming and seperation from the rest of the ui)

thanks in advance!
(i hope that wasn`t to confuse)

andreas