CDJ-900NXS - CUE/LOOP - BEGINNING THE LOOP

Material ; 2 CDJ 900 NEXUS (firmware 1.0) - 1 DJM 900 NEXUS - REKORDBOX 3.0

Support : Rekordbox  (PROLink) - USB - Link or CD (The problem is the same on everything supports)

Hello, when I starts up " 4-beat Loop " a loop of 4 or 8 starts up

When I want to make the bigger or smaller loop, I starts up " Cue / Loop (1 / 2x or 2x) " it works.

The problem, when I starts up " Cue / Loop (1 / 2x or 2x) ", the loop begins at the beginning.

How I make to change so that when I  puts itself bigger or smaller " Cue / Loop (1 / 2x or 2x) " without returning at the beginning of the loop.