Session box problem

Hello, I’ve made a 4×4 session starting from pad 5 in order to use the four last columns of my APC mini for clip launching in Live. I have also mapped 2 buttons for up-down navigation but my problem is that I don’t get the correct led feedback. The apc mini continues to show me the 16 clips of the pads that I assigned in the first place and when I schroll down the scenes won’t change relatively. Am I doing something wrong? Or is this a feature not included?
Thanks in advance