Action upon a measurement exceeding a threshold + or -

[AlexVercammen]

I would love for Bed Visualizer to Cancel/Continue the start of a print if a measurement is exceeding a threshold + or - (user settings). In my case, every prints start with the command to level with @BEDVISUALIZER. But, sometimes, a corner is out-of-wack and I have to catch it. Not sure if you can "activate" the Bed Visualizer tab to bring it upfront as you prompt the message. << M117 Homing... G92 E0 ;Reset Extruder G28 ;Home all axes M117 Building Mesh... G29 ;Level bed (mesh) @BEDLEVELVISUALIZER M420 S1 V ;Mesh Leveling ENABLED