Function SCIPchgRhsNonlinear 

pub unsafe extern "C" fn SCIPchgRhsNonlinear(
    scip: *mut SCIP,
    cons: *mut SCIP_CONS,
    rhs: f64,
) -> SCIP_RETCODE

changes right-hand-side of a nonlinear constraint

@attention This method can only be called in the problem stage.