Vbplaza Updating Points ?

[paul41598]

I'm trying to write a custom script that will update a users vbux points from the user table. Basically in my php file I have the below code. Which works but does so in a wierd way.

Lets say user A has 20 points. The below script adds 10 points to their table to make a total of 30 points. However when I run it, the user now has 50 points because it takes 20 + 20 + 10. Is the SET statement not correct?

			$vbulletin->db->query_write("
				UPDATE " . TABLE_PREFIX . "user
				SET vbbux = vbbux + 10
				WHERE post_groan_times > 0
			");