In Delphi, you can’t declare typed constants or initialised variables of file types (including type Text) or the type Variant since they can’t be initialised.
program Produce; var V: Variant = 0; begin end.
The example attempts to declare an initialised Variant variable, which is forbidden.
program Solve; var V: Variant; begin V := 0; end.
The solution is to use an assignment statement to initialise a normal variable.