Random sequence puzzle?

freekygirl

Hi there, I'm trying to figure out how I would set something like this up and am looking for some guidance.

For context: In a library, the player is meant to sort books onto shelves. I want it so that the player can click on a hotspot, receive 5 books (out of a possible 20 books) into their inventory, put them onto their desired shelf, and then for an actionlist to play so that we understand the task is completed. Alternatively, it could be done by instead clicking on the hotspot 5 times to generate 5 books, but then I would need it to stop after the 5th time.

I would imagine this would start out by running a sequence with a possibility of 20, but I wouldn't know how to get it to give 5 books, or alternatively stop giving out books after clicking on the hotspot 5 times. Secondly, and most importantly, I'm not sure how to set it up so that the player knows they're done once they've put the 5th book away. I'm assuming this is done by keeping a score, but I'm unsure of how to set that up.

Thanks so much