Ftp datafield

Hi, after one hour de frp datafield does not show any dsta in my garmin 1040

Note the point-of-failure and 3-5 sec sprint requirements –
Real-Time FTP Determination – Xert (baronbiosys.com)

You may also need a code to activate the data field as described here –
What’s My FTP? - Xert | Garmin Connect IQ

Thanks for your reply.
What kind of code do I need to activate the data field? How do I ger this code?

You can find your code here: (8) Xert - Xert ConnectIQ Apps (xertonline.com)