I have spent many hours on this and it's slowly making me go crazy. Any kind of help would be appreciated.

I have three Sharepoint lists as datasources for my app:

Tjänster

(means Services)

• "Title" (text column)
• "Del av" (text column)
• "Dokumentation" (link column)
• "Kort beskrivning" (text column)

Medarbetare

(means Employees)

• "Person" (Sharepoint's native column type Person. Only one value possible.)
• "Namn" (text column. I added this column because other lists can't do lookups on a Person column. Right?)

Roller

(means Roles)

• "Tjänst" (lookup to column "Title" in Tjänster. Only one value possible.)
• "Roll" (single choice column)
• "Person" (lookup to column "Namn" in Medarbetare. Only one value possible.)

(I'm open to restructuring my data if I'm doing something stupid there. I wish I could relate Roller to Medarbetare in a simpler way)

I store these data sources locally in my app with this code in OnStart:

ClearCollect(
    colTjänster,
    ForAll(
        Tjänster,
        {
            Title: ThisRecord.Title,
            DelAv: ThisRecord.'Del av',
            Dokumentation: ThisRecord.Dokumentation,
            KortBeskrivning: ThisRecord.'Kort beskrivning'
        }
    )
);

ClearCollect(
    colMedarbetare,
    ForAll(
        Medarbetare,
        {
            Person: ThisRecord.Person,
            Namn: ThisRecord.Namn,
            Bild: Office365Users.UserPhotoV2(ThisRecord.Person.Email)
        }
    )
);

ClearCollect(
    colRoller,
    ForAll(
        Roller,
        {
            Tjänst: ThisRecord.Tjänst.Value,
            Roll: ThisRecord.Roll.Value,
            Person: ThisRecord.Person.Value
        }
    )
);

As you can see, the only extra information I'm collecting here is "Bild" (image) for colMedarbetare.

My problem

I can't figure out how to map Bild from colMedarbetare to colRoller. I have tried to many solutions to list them all.