[Vala] this = Object

[Cyrille Colin <colin univ-metz fr>]

hi,
i've just update to 0.10 from 0.8.1 and I guess now vala detect one of
my bad.
I used a init function to give my object pointer to external function
that will manage callback :

        init(this)

init() is define in a vapi :
public static void init (ValaObj obj);

and use in External library like this :

static void *ValaObj;
void init (void *obj) {
        ValaObj = obj;
}

Then i define in vapi the callback, C -> Vala :
public delegate uint32 callback ( ValaObj, int value);

and this is my callback in Vala code:
public uint32 cb (ValaObj obj, int value) {
                this = obj;
...
}
it works fine with 0.8.1 and throw exception with 0.10 :
error: unsupported lvalue in assignment
May someone could help me,
thanks in advance,
Cyrille.