as like the title. i wanna ask something

so right now im trying building facebook page autopost bot.

may with-ur-kindness , help me to script things like :

1. create a new variable, which it from a random numeric from 4 to 9

2. after get the variable number, we use it to create a total lists by the variable, ex: we got 5. so it will create a new list for 5 rows.