Thanks for answering.
I uploaded the code shown there.
And i see they declare some pins as inputs.
They get 2 High levels and one low.
I though it was as easy as with the Arduino itself, so you just do
pinMode(13, OUTPUT);//declare digital pin as output
and then
digital Write(13, HIGH); set the digtal pin to 5V.
I know it might look like very well explained in the link you shared, but If there is any other example it would make things more clear.
Thanks in advance.
Regards,