[Plugin: Promotion Slider] Only 5 posts displaying

the numberposts parameter isn’t being used even though I’ve specified it in the shortcode for the slider. No matter whether I specify this parm or leave it out the slider only displays 5 posts. Perhaps I haven’t searched the forum enough but does anyone have any suggestions?

[promoslider width=”600px” height=”300px” numberposts=”3″]

Thanks, Donta

http://ww.wp.xz.cn/extend/plugins/promotion-slider/