update user vp

[j6969 at inwind.it]

Hi all, i'm developing an authentication module. I need to associate a radom value to each user, what i did is create a new value pair, but i don't know if i can update that vp from my auth module, if yes could you make me an example of module that does that ? or a hint would be nice  ;-)

if that is not possible maybe i could use a file but it doesen't seem so nice, suggestions ? 
thank you!
Alex 


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