Filtering with DataType on a backend query

Resolved

Hello,

I'm designing an app to connect parents and babysitters. I'm looking for babysitters available for a given date and time slot.

When I want to retrieve the list of available babysitters, I can't filter the collection with a DataType value.

My DataType has this structure :

My collection has this structure :

Is the problem with my data model or the use of a DataType as a filter (array contain)?

Thanks in advance 😄

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