How can I start my story?

@FIRSTNAME enters from right to screen center
INT. BLACK - NIGHT

Avatar - Name Input {

    NARRATOR
So... what's your name?

label first_name_input

input What’s Your First Name?|What’s Your First Name?|Done(FIRSTNAME)

if (FIRSTNAME is “”) {

    NARRATOR
You do need a name...

goto first_name_input

} else {
continue
}

#}

    NARRATOR
To be continued . . .