::Bringing other people into the conversation is fine, but just make sure (a) that you're not just targeting a group of people likely to take the position you favor; and (b) that you're using a neutrally phrased notification so that you aren't predisposing them to support your position. Your message to those you notified was asking them to take your side in the matter, which does violate WP:CANVASS, and you might think about rephrasing it.