# FAQ: Method Calls and Input - Define Parameters

This community-built FAQ covers the “Define Parameters” exercise from the lesson “Method Calls and Input”.

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## FAQs on the exercise Define Parameters

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This exercise will not progress if you use placeholders inside Console.WriteLine() inside the method like:

``````Console.WriteLine("You visited {0} planets...", numberOfPlanets);
``````

It is working in my Console… With the placeholders…

Then it was fixed meanwhile,. I wrote this last year

I don’t understand, why am I supposed to call a method VisitPlanets() in Main(), at the top, before I write how it should work, at the bottom?