Presenting Custom Object data using Email Script

[Anonymous]

I have a many-to-many data structure which is similar to the documentation presented here:
Create Marketo Custom Objects - Marketo Docs - Product Docs

So I have Leads and Their "Course Catalog"  and "Courses"

When creating the local Email Script Token, I can only see the "Course Catalog" in my sidebar as a custom object - but that is no use...

I would need to have a token for the actual "Course 1" in the leads catalog and even more specifically, pull the "Course 1.Grade" to be presented in the actual email.

Any idea how this can be achieved with the current Custom Object configuration?

Thanks a lot,

Antton

[Anonymous]

This problem has been previously discussed also here How to add value from custom object into an email
Any information how to overcome this problem would be greatly appreciated, as I've already read all possible existing documentation..

[SanfordWhiteman]

You can't accomplish this in the way you describe.

Instead consider making the Course Catalog a separately maintained Velocity token (which is in many ways more efficient).  The Course becomes a first-level object. I described this approach a bit $TriggerObject usage according to documentation​

[KyokoKazama]

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