Background:  two entities here : JobMaintenance and JobDetail  (1 JobMaintenance have many jobdetails)

1. Job Maintenance:

2. JobDetail: JobMaintenanceID as foreign key

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My expectation is to expand record in JobDetail (Only show the top phase code of each jobMaintenanceID and expand the rest of the phase in jobDetail ):

- Below is the JobDetail Table, and we can see there are two JobMaintenanceID : 3580 and 3581
-->In this case How can I only show the top record of each maintenanceID in JobDetail table? and show the rest of the phase inside ? 

- If I Use the block , it should be two aggregates for jobdetail? and my function in this page seems will be affected?? 

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Also, I try to use the JobMaintenance table first and create a block for JobDetail.

Seems it cant pass the JobMaintenanceID correctly. 

- Only JobMaintenance table

- Inside the record, I put block with JobDetail table inside (Input parameter is the jobmaintenance ID from above aggreagate), but the result seems not correct

- The result: not consistent, inside the content are same for all record, not show the relavant JobDetail of JobMaintenanceID

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Would please advice how to realize my expectation in a correct way. Thanks.