File types (including type Text), and the type Variant cannot be initialized, that is, you cannot declare typed constants or initialized variables of these types.

program Produce;

var
  V: Variant = 0;

begin
end.

The example tries to declare an initialized variable of type Variant, which illegal.

program Solve;

var
  V: Variant;

begin
  V := 0;
end.

The solution is to initialize a normal variable with an assignment statement.