Item Security based on Content types using Event Receiver

Hi All,

is there a way to automatically impose security(item level permission) on items based on their content type such that Item A with Content type A is only visible to users in  Alfa sharepoint permission group

The aim is to avoid setting up this permission criterion whenever an item is created by breaking up its inherited permissions and assigning unique ones to each item.

I have so far followed this post but for some reasons i cant get it to work on SP2013.

Any suggestion will be greatly appreciated

Kind Regards

Louis

thanks