Hi
I am trying to Lookup a Sharepoint List People value (DisplayName) but I am getting an error that Expected value is Text. When I have the cursor after the last parenthesis it shows the value, but it will not display the result in the Label.

LookUp('Risiko CheckListe', Title = DDProjektname.Selected.Title, ProjektManager.DisplayName)
DDProjektname is a drop down.
I have tried adding .value & .text after DisplayName, I have seen suggestions of using Concat() but I am not sure how. Any ideas please?
Many thanks