How do I create child records in a subtable?

As a Formula in a Button in the Table 'Student':

---

let myID := Id;
let myL := create Lesson;
myL.Student := myID;
popupRecord(record(Lesson,number(myL.Id)))

----

Leo

Hi Leo and Paul,

I tried everything but I don't know, what I missed out?! Enviornment iPad

let myMainID := Id;
let mySubRec := create Lagerebene;
mySubRec.(Lagerplatz := myMainID);

The same happens, when I use "Bezeichnung" as a reference for my main table data enty.

Ich habe die Lösung gefunden. Es scheint this zu sein

let myMainID := this;
let myAnzahl := Anzahl;
for i in range(1, myAnzahl + 1) do
let mySubRec := (create Lagerebene);
mySubRec.(Lagerplatz := myMainID);
mySubRec.(Ebenennummer := i)
end

Hello,

Can I use a For loop structure? Will it work correctly with embedded create record function? I'm a university professor (University of Ibadan) and need to create Student records at once.

One possible method> Limit number of records in a subtable of essaytyper