The following message appears in my App whenever I run my app on my phone: "The operation Rotates cannot accept the arguments: , [10]"

MIT App Inventor Help
1

My problem is that whenever I try to control the plane and click the buttons "oben", "unten", "rechts", "links" (It's german) the following message occurs: "The operation Rotates cannot accept the arguments: , [10]"

Could one please help me out. Shouldn't be that much of a problem, right? Attached the file:
Airplane_Game.aia (123.3 KB)

2

You get that error, because the Rotates properly expects a boolean value

From the documentation Drawing and Animation

Rotates
If true, the sprite image rotates to match the sprite’s heading. If false, the sprite image does not rotate when the sprite changes heading. The sprite rotates around its centerpoint.

Taifun

3

I don't get it. What should I do?

4

Set it to true and set the Heading property accordingly
Taifun

5

Screenshot_20240510-024638_Chrome_1
Screenshot_20240510-024638_Chrome_1884×721 91.6 KB

Where and what exactly? Could you please mark where changes have to be made?

6

blocks
blocks842×234 34.7 KB

This should get you started.

7

Where's the difference?

8

Speed

9

Thanks