How can I create SerachParameter based on resource's resource

Hi,
I have Basic object with the subject that referenced to ImagingStudy.
ImagingStudy with the subject that referenced to Patient object.

I want to create SearchParameter on Basic object that filtering and sorting by Patient attributes ( name, gender etc.)

I can create SearchParameter for ImagingStudy on Basic. It works.
But multi deep (Basic->ImagingStudy->Patient) is not working.

Do you have any idea about this?

thanks,
best regards.

Please don’t raise the same question in multiple places simultaneously. Give the community a chance to respond before posting elsewhere. (See response here: How can I create SerachParameter based on resource’s resource on FHIR - Stack Overflow)

Sorry for that.
Thanks for your answer.