Losers from Qualifying round qualified for another competition

How do i set up my advanced rules to have losers from qualifying round of Champions League getting qualified for Europa League group stage for example ?
I tried lots of different things but every time i want to test the rules I have a message "New stage 1 for Europa League can't find enough teams to be created. O teams found, 40 needed"
I have a qualifying round for Europa League for 40 teams so i get 20 teams qualified from that and 20 losing teams from Champions League stage 0.
So i should have the good number of teams in the competition

you are new to editing advanced rules and the best advice is to download a few files and open them in the editor and see how things are set up and how files have been made

it can be complicated and you need to give yourself time and always back up your file often…also be prepared to encounter bugs even when you have done the hard yards

also I would not start any major project until the last patch to the editor is released as there are a few issues awaiting fixes especially with continental rules

 

my suggestion is download @Carlito85  european revival files from FM20 there is brilliant work there and many of the files are set up to do what you want where teams drop from group stage of UCL into the Europa