Hello @Joyce,
We always communicate in English in the community, if you don’t mind 
Also, please post your code in a manner it becomes more readable (you can read that here how to do so). I’ve edited your post already.
To go back to your question: it’s this code that defines what accounts can be selected
{% input custom[current_account.number].account_42 as:account_collection range:42 %}
That ‘range’ you see there, is what you need to give to define which accounts can be selected. If you change that to 42,43 you’ll be able to select 43-accounts too.
You can even add a default like
{% input custom[current_account.number].account_42 as:account_collection range:42,43 default:42 %}
In last example, you’ll be able anything in a range from 42 to 43, but standard the 42-account will already be selected.
Hope this helps you with your question.