Datatype _id in repeater data?

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1

I build an array of objects in code to use in a repeater. The _id of every repeater item, is that a string or a number?
Thanks.

2

String, I would assume. You should be able to make it whatever you want. As long as it is unique. Similar to just the auto-generated _id’s in all datasets

3

found it. It´s a string.