You haven’t shown the complete program. Forum readers don’t know what is input data, CVX variables, CVX expressions.
In any event, CVX is not appropriate for all problems. You might get help on this forum reformulating a convex constraint, or a constraint which is exactly convertible into a convex constraint, to a form which CVX will accept.
But if the constraint is non-convex, there is no exact convex reformulation, and it is up to the user to decided whether there is some alternative constraint which is convex, and still acceptable to the user. That is something you should not expect forum readers to do.