UIImageView not fading out as it should in the simulator?

Question

i am using an animation block to fade out a view. fading in works perfectly, however fading it out does not. it waits for the animationduration, then just disappears. I hope that it is because of the simulator being too slow, but i might have just made a stupid mistake; as i will probably have to wait a while before i can test it on my device, i'd like you guys to see if something's wrong
i set up 4 different views. depending on a value, either all of them, none of them or just 2 of them have to be shown. If a view that's needed now wasn't visible it fades in, same thing other way around for views that aren't needed anymore.
if (wc==1) {
[UIView animateWithDuration:1 animations:^{
viewOne.alpha=100;
viewTwo.alpha=0;
viewThree.alpha=0;
viewFour.alpha=100;
else if (wc==2) {
[UIView animateWithDuration:1 animations:^{
viewOne.alpha=0;
viewTwo.alpha=0;
viewThree.alpha=0;
viewFour.alpha=0;
else {
[UIView animateWithDuration:1 animations:^{
viewOne.alpha=100;
viewTwo.alpha=100;
viewThree.alpha=100;
viewFour.alpha=100;
like i said, it works fine for fading in, but it does not for fading out... this function is being called after i swipe the view, and the value WC has been changed. thanks a lot for reading this text already

Answer 1

alpha values should be between 0 and 1