Where to find post data on firefox

[47]

Hello;

My firefox version 68.0

I need post data like

user=<USER>&password=<PASS>

see the picture below

https://www.noelshack.com/2019-28-5-1562...stdata.jpg


but when i use the development web tool from firefox i don't have this tab on the header ; no form data tab ...

thanks for your help

[286]

[quote pid='2452914' dateline='1562930686']
test the login page with fiddler

[/quote]