Renato,
If you know the sizes of your vectors you could simply pass the elements of your vectors as separate arguments and populate the various arrays in chuck. The following makes two arrays -- one with two elements, one with three:

chuck test.ck:1:2:3:4:5

test.ck as follows:

int vect1[2];
int vect2[3];

for( 0 => int i; i < me.args(); i++) {
    //fill vect1
    if(i == 0) {
        for( 0 => int i; i < vect1.cap(); i++) {
            Std.atoi(me.arg(i)) => vect1[i];
        }
    }

    //fill vect2
    if(i == 2) {
        for( 0 => int i; i < vect2.cap(); i++) {
            Std.atoi(me.arg(i+2)) => vect2[i];
        }
    }

}

for(0 => int i; i < vect1.cap(); i++) {
    <<<"vect1", vect1[i]>>>;
}

for(0 => int i; i < vect2.cap(); i++) {
    <<<"vect2", vect2[i]>>>;
}

test.ck outputs:
vect1 1
vect1 2
vect2 3
vect2 4
vect2 5