Append to list stored in table key

Thanks Kai, I need do dive dipper in all nuisances - as you mentioned, knowledge is spread among many articles, sometimes it is hard to figure out which are outdated and which are current. It's hard for me to understand all the code because it's not my area of competence - at least not during last 20 years. Trying to keep up as fast as possible but... I am sick right now so it's hard to master analytic skills, but will try hard. What is great about this forum that there are people that devote time and patience to help and explain things to newbies like me - really, really I am appreciating all this effort, you guys are just amazing!!

Piotr