styles in ButtonData

[Vicente de Rivera III]

Trying to get a bold font for a buttonData"
                                  <Checkbox>
                                        <buttonData>
                                             <content:ButtonData text="One"
styles="{fontBold:true, color:13}"/>
                                        </buttonData>
                                    </Checkbox>
"

Actually, I'm trying to make a Rollup Checkbox. Any help?