Rights Module not working for table name having underscore


I am new to yii1 and I have install rights module.Rights module working perfectly for tables without having underscore.For example if table name is contacts then guest user can access it as I have assigned permission through rights module.

But if same thing I did with table name having underscores is not working.For example : If table name is services_offered and assigned permission for guest user same as I did for contacts then also it not work for guest user.

Please help!!

if you not follow namespace properly thats why cause issue