Couple of things.
1. The blue bar that says "Trigger | Drag Picture [Get Script Parameter]" is the script name. It is just the name.
2. The blue bar that says "Trigger | Drag Picture Copy" is a copy of that script that you've modified. Again, it's just the script name.
Do you have FM Advanced? If so, use the Data Viewer as you debug the script. See what the value for "Assets::Selected File" is, and later, see what the value for "Members::Selected File" is after those steps run.
For the Drag Picture Copy trigger, you are passing the parameter "GetFieldName ( Members::File 1 Container )". That will simply pass a text value equal to the name of the field you reference, which will give you a text value of "File 1 Container". If that's what you're after, okay. Otherwise, you may need to use GetField instead of GetFieldName.