Error while using AppDesigner

Hi,

I am getting some introduction to App Designer through this tutorial

https://www.mathworks.com/videos/matlab-and-simulink-robotics-arena-building-apps-with-matlab-and-app-designer-1513378634144.html

When I run the program, it gives

I don't think I left out anything. I have also attached the program. What's wrong here?

[Adam Danz]

videoinput looks like it's a part of the Image Acquisition Toolbox. To see if you have access to that toolbox run

ver

and see which toolboxes are listed.

[Deepayan Bhadra]

I ran it and found Image Acquisition Toolbox Version 5.1 (R2016b)

[Walter Roberson]

What shows up for

license('test', 'Image_Acquisition_Toolbox')

If it shows 1 then you should be okay; if it shows 0 then you do not have a license for the toolbox.

[Deepayan Bhadra]

Hi Walter, yes, I ran this and I found I do not have the toolbox. Interestingly, why does the other suggested solution show the toolbox?

[Walter Roberson]

There is a difference between having the toolbox installed, and having it licensed. For individual users, the interactive installer will only allow you to install things you have licensed, but the technical contacts can install nearly anything even without a license.