So for example i make the compensation before every print because i vary the bed temp alot.
so my startcode in the prusa slicer is
G90 ; use absolute coordinates M83 ; extruder relative mode M104 S[first_layer_temperature] ; set extruder temp M140 S[first_layer_bed_temperature] ; set bed temp M190 S[first_layer_bed_temperature] ; wait for bed temp M109 S[first_layer_temperature] ; wait for extruder temp G28 ; home all G29 S0; G1 Z2 F240 G1 X2 Y10 F3000 G1 Z0.28 F240 G92 E0.0 G1 Y100 E8.0 F1500.0 ; intro line G1 X2.3 F5000 G1 Y10 E8 F1200.0 ; intro line G92 E0.0