Variable on tablerelation coming from enum

Hello, 

I'm wondering if it's possible to have a tablerelation on a field that is depending on a choice of an enum.

      field(1; Code; Code[20])
        {
            Caption = 'Code';
            DataClassification = ToBeClassified;
        }
        field(2; "Status Object"; Enum "Status")
        {
            Caption = 'Status Object';
            DataClassification = ToBeClassified;
        }

These are the fields in my table. I would like to add a table relation in code that depends on the choice made in the enum (Customer, Item or Vendor). 

I was thinking to add a trigger onlookup in de field (2) and adding a procedure who sets a global variable as a text (the chosen enumvalue) and passing the variable as the tablerelation but it doesn,t work.

Thanks for the help