fscommand variable argument? and quote in a quote?

hello adobe flash community.

im new with flash pro and actionscript

i have a problem with fscommand..

im using it for a program called neobook.

made a button in flash pro cs6.

with a click it sends

fscommand("NeoBook", "GotoNextPage");

works correctly.

but i need to have it go to a specific page.

GotoPage "page3"

fscommand("NeoBook", "GotoPage "page3"");

doesnt work because there is quote beside the quote..

how do i bypass this?

what if i set variable x=GotoPage "page3"

how do i use a variable in a fscommand ?

fscommand("NeoBook", x); ?