How to Relate Survey Instance to the Incident that triggered it

[Cirrus]

Good afternoon all,

I need some help please, possibly in two parts.

Firstly, I have a requirement to relate the survey instance to the incident that triggered it. I have referenced the following article: 

Survey Response as related list on record

Rather than create a new relationship between incident and asmt_metric_result, I need to create it between incident and asmt_assessment_instance, but when I apply the script my related list shows all survey instances.

What do I need to change on the code to match the survey instance to the trigger_id and show only this instance on the related list of the trigger id incident record.

And now for the second part. 

If the survey response requires further investigation, a case record will be opened. We already have a related list for Incident, so could easily select INC000073471 for example. But could we then query any instance against this trigger ID and add the assessment instance as a related list on the case?

Any help huch appreciated. 

[Cirrus · Accepted solution]

Managed to resolve this using the following:

current.addQuery('task_id.parent', parent.sys_id.toString());

[Community Alums]

Managed to resolve this using the following code 

current.addQuery('trigger_id', parent.sys_id);

[Community Alums]

Managed to resolve this using the following code 

current.addQuery('trigger_id', parent.sys_id);