Referencing relationship in collection via Custom API call action

[maksim]

Question regarding relationships in collection. I have collection named Responses which contains relationship to another collection Traits . Is it possible using Custom Actions (calling 3rd party API) to create an entry in Response collection pointing to the trait in Traits collection. Basically what I am after is:
response.trait should link to the traits.name .

My current structure for the Responses collection is:

Responses

• Text
• Trait text (name of the trait in text format)
• Trait (reference to trait table/collection), but I can’t seem connect this one in any way to actual Trait? See the screenshots.

But it looks like I can’t use in reference response values except into text fields? Is only option to connect to the Zapier and try to reference the trait via that way?

[primedev06]

u can try using zapier but i dont know what you are talking about

can you expatiate

[maksim]

I added screenshot. I hope it helps to clarify. Basically I would like to reference the Trait object in Responses collection, I have the text version of the Trait name, but I haven’t found an option to reference the object in any way here.