How to change temperature on tower test?

Snapmaker 2.0 (3-in-1)
2

You can’t. Luban doesn’t have that feature. You can modify the gcode by hand if you’re dead set on printing that specific tower. If you just want any temperature tower, 3d Print Guide_Walk Through has some presliced towers for PLA and PETG temperature ranges and all the Snapmaker bed sizes (expand the fourth point in the first post).