Jaguar XF 2010 4.2 8 cylinder.

Do i have change the filter ever or it is sealed? I have 100,000 Km on the car

 

The trans filter is part of the trans sump pan.
At your mileage the trans fluid is due to be changed (don't listen to the "sealed for life" baloney), and part of the fluid change process is to renew the sump pan.
Plenty of threads and posts around here on how to change the trans fluid in the ZF 6HP26, but be warned you need at least 6 litres of fluid and it's not cheap!