Variable errors in examples?

So., installed CircuitBlocks and several of the example sketches contain similar errors like this one…

That eventually leads to a compile error.
Can anyone explain his to me?

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Hi @Maestro,

thank you for reaching out.

Can you contact us at contact@circuitmess.com and we’ll help you out? :slight_smile:

Sincerely,
Monika from CircuitMess