thank you very much Machak, your answer is a great help, now we have the problem that we don’t KNOW how to create a “Groovy script”, so I think we will have to do it by hand all the contacts 
thank you very much Machak, your answer is a great help, now we have the problem that we don’t KNOW how to create a “Groovy script”, so I think we will have to do it by hand all the contacts