Remote join with custom type

[ManUtopiK]

Hi!

I want to add a remote schema relationship with a custom type. Here is a preview of the remote schema:

query {
  idty(pubkey: PubKeyGva!) {
    isMember: Boolean!
    username: String!
  }
}

The type PubKeyGva is in fact a simple String.
I created a User table in Hasura with pubkey column:

User {
  username: String!
  ...
  pubkey: String!
}

I want to set a relationship between the remote schema and my schema with the pubkey column.

But when I set it, Hasura return this error:

Inconsistent object: in table "user": in remote relationship"gva": expected type "PubKeyGva" but got "String"

So, my question is how to create a relationship with a custom type in the remote schema?

[ManUtopiK]

UP! I cannot still find a workaround to do that...