JAVAFX: multiple sceenbuilder in other sceen

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Java

JavaFX

Hello together,
i want to add one sceenbuilder fxml multiple times to another sceen with diffrent data.
For each dataset add one fxmlCalendar.fxml to the main sceen with the specific data from database.

Can you help my by this problem? I don't know any other way to solve this.
Image what i want to do.

Thanks a lot!

What I have tried:

I tried it like this:

while(rs.next())
{
   grid.add(FXMLLoader.load(getClass().getResource("fxmlCalendar.fxml")),0 , i);
   i++;
}