Relationship to a sub container of a softwareSystem

[Mannshoch]

I try to create a Diagram that show how our systems are connected.

        group "department 1" {
        user = person "user"
}

        group "department 2" {
        
        Vendor = softwareSystem "Vendor"  {
        
              PID = container "PID-CAD"  {
                tags ",CAD"
              }
              Piping = container "Piping"  {
                tags "CAD"
              }
            
            }
       }

Is it possible to create a relationship from user to PID. DSL show me an error if I write user -> PID
I also tried to user -> Vendor.PID

[Mannshoch]

Sorry, I assumed the Problem on the wrong position.
Following the tutorial again was not the solution, the problem lied on the structure in my .dsl file. I moved to much around and created a curly bracket problem.
Sorry for posting this here.