Combination Lock

@cimarronline
It shouldn't be too simple, so the thing in the middle represents a 4. The rest is just for confusion ;-)

@Pratik Bhalerao
First I used a wedge but I thought a tube is looking better. Naive fallacy...

Question from a rookie: Can I change the level or do I have to create a new one?

@Thomartin
If you are thinking of replacing the level just for single block. Then I should say don't do it. Just add description no tricks required.

If you still wants to change, then upgrade the level.
Upgrading like. Let the B do some stuff and let the ball get on that automatic launcher (where Ball already is in this card) and then code. Add different code this time.