Thank you very much for your example and your help.
I am not really good at coding so it took me some time to understand the typedef struct and the union on your code but I made it work 
. I tried to send the RR interval also, but while I get the flag right ( It shows on the phone) I get no values.
I just added on your struct an uint16_t RR_interval and on the union.
I am using the NRF Connect app and besides the fact that I have not found an option for auto save all the data you stream, it works fine!
Thank you again!