VC4 IDEX copy mode

Hello, I’m trying to print with IDEX copy for the first time on my 400x400. I didn’t get how to set this up in prusa slicer. I set bed size in printer general settings and then I used idex copy macro in ratos. Then I send stl and getting this error: Move out of range - looks like right toolhead moves to the rightmost position on the bed) Any ideas how to set this up in prusa? - I already have there start gcode for idex printer as described in ratos doc. - I did the vaoc calibration from comissioning guide - I tried multi-material printing with both heads before - works fine - I tried different STL models, even on a small 50x50 cube it complains about the same X 557.444 offset