No need to apologize, your English is better than many native speakers. Your LED shouldn’t be blinking, that code just turns it on and off… something else is going on. Is the code from the previous example still running? Can you post all of the code you have?
Also, for future reference, when you post code, if you click the “C” in the markup menu, it will add code tags that set off your code nicely, so we can all see it more clearly…and congrats on getting started with the Electric Imp… welcome to an great community.