Need help in kirupa's xml tutorial

hello,
i need help in kirupa’s tutprial “[SIZE=5][COLOR=#003366]Using XML in Flash CS3/AS3[/COLOR][/SIZE]”

when filtering the node values, how can i match a text string say “[COLOR=#666666]Stephen[/COLOR]” with [COLOR=#666666]“Stephen E. Ambrose”[/COLOR]

[COLOR=#006610]var[/COLOR] [COLOR=#000050]authorList[/COLOR][COLOR=#0000ff]:[/COLOR][COLOR=#000050]XMLList[/COLOR] [COLOR=#0000ff]=[/COLOR] [COLOR=#000050]bookInput[/COLOR].[COLOR=#000050]Book[/COLOR].[COLOR=#0000ff]([/COLOR][COLOR=#000050]author[/COLOR] [COLOR=#0000ff]==[/COLOR] [COLOR=#666666]“Stephen E. Ambrose”[/COLOR][COLOR=#0000ff])[/COLOR];
using the above code it only searches the node which author value is [COLOR=#666666]“Stephen E. Ambrose” [/COLOR][COLOR=black]but i want to search only “Stephen” and want to get this node returned.[/COLOR]

:jail: