inserting data in my DB one to many relation

Hello All,

I have a problem with inserting Data into my Database, my CDT named "class" has {emplyeeID, courseID, status} I want to write the following:
{EmployeeID: 1, CourseID:1, status: "Not started},{EmployeeID:1, courseID:2, status:"In progress"},{EmployeeID:1,courseID:3, status:"Completed"}

but when I check my CDT it writes only the full first row and the rest writes only the courseID.

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