"BOLD" is ignored

hi

i setup the TL with embedded font and all text and tags are in xml.

all works great however the bold tag is ignored

<flow:span fontSize="13" color="0x666666" textDecoration="underline" fontLookup="embeddedCFF" fontFamily="FbTypograph Regular" fontWeight="bold">blabla text</flow:span>

is that the correct syntax? fontWeight="bold"

do i need to include import any pack while building?

thats what i currently have:

import flashx.textLayout.elements.TextFlow;

import flashx.textLayout.container.*;