@ventilator
this looks great, i like how the code needed for the lambda expression is shorter than my attempt !
The handling of the updating process itself doesn't pose problem, only the usage for the user did ^^

@Joozey
i had a quick look at the wrapper and think this could indeed be possible !
edit : I'll try to implement the wrapper, without using any unsafe instructions - so far I was able to do this ^^

@all
should the wrapper use double or float instead of Var ?