Algodoo

when you tap the a first 1 time it will transform.

Your instructions in the scene description are confusing! I tapped the "1" key multiple times and nothing happened. Then after looking into your scene, I saw the script was to recognize the "A" key! Even your comment above is a little confusing. So, here is my suggestion. It is better to word the instructions like this: Tap the "A" key and the cat will turn black.

As long as you use a standard Internet browser, you can edit the existing scene by changing the instructions. But if you use the Algodoo built-in browser, then you cannot edit the scene.

Hope this helps.

Thank you for the tip! some days the scene makes to tap a 2 times but tap the key A and see how it transformed

I can’t do it\IT IS IMPOSSIBLE