PhysX Custom Shape Problem

Hi I have a character that has cloth but the issue I have is that a normal capsule does not allow the shape of my character. So I used a custom shape that is extremely Low poly and tried that, but the problem is the clothes still go through, Am I doing something wrong or is it that the custom shape properties does not allow for cloth collusion, If So why is it in a cloth plug in.

Is there anyone who can assist me or send me a link to the people who can please.