Object iteration with BKM

I am trying to iterate through an object using a BKM in the Sandbox environment, which is integrated into one of my company's internal applications. The BKM will need to return an object-based output.

Issues:

• If I define the BKM output as a string I can see the output (see screenshot output2)
• If I don't define it as a string, I don't have access to the output (see screenshot output1)
• In both cases, I can see the expected output under the 'Inputs' section
• Also in both cases, the BKM's output is being duplicated

Is this a limitation of the Sandbox environment, am I doing something wrong in the implementation or this is an actual issue of the environment?

Thanks,

Greg