Creating a Basic Cloud Application no visible Button

Hello Experts,

I copied the Example of the SAP Cloud Dev 04: Creating a Cloud Application for my C4C Customer-specific solution. I used the Thing-Based Navigation and i can`t see the CalculateBonus Button.

The link to the SAP Video :

http://www.youtube.com/watch?v=lkpq4C7KmJc&list=PLAN4lvL4kFnh45xtdaBbDbxVLfITqQixH&index=4

Can you help me?

With Kind regards

Sabrina