Thank you for the replies people. The thing is that I had a basic education on VB but this was about ten years ago. First of all it is a different language and second I forgot a lot of it. I was able to write small and simple programs but when I try the "device state article" that is indeed published on this forum and looks really simple I can't seem to get it to work.
Maybe it is indeed the combination of Prontoscript not having an IDE and the fact that I never used javascript. I will try the programs you mentioned but I feel this is going to be a struggle. Either way I will keep trying to get it to work. Maybe I should be folowing a good JS-course first.
Thank you for the replies.