@cayetano-gros Hey! I have found the solution by myself!!!!!!
For those who have the same problem:
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Be extra carefull you have downloaded the correct version of the skill in order to set the rights commands (turn off pc): TRIGGERcmd Smart Home. It seems that they are like other two differents versions in alexa's skill. Please, be sure to download the correct one, if not, you probably won't be able to detect the commands.
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With correct skill activated and linked, delete and create again the commands. You will have more possibilities for the skill to detect it.
And that's it. Hope this works for somebody
Have a nice day!