I have not tested this outside of comparing the gcode between SuperSlicer and Cura. Values were within 1mm of of each corresponding value.
I don't know python and have no interest in learning it, hopefully someone can clean this up.
START_PRINT BED_TEMP={material_bed_temperature_layer_0} EXTRUDER_TEMP={material_print_temperature_layer_0} AREA_START_X=%MINX% AREA_START_Y=%MINY% AREA_END_X=%MAXX% AREA_END_Y=%MAXY%
@frankbags you are right. its unbeleavable. it was cura`s fault. with fresh installed cura (5.0.0 + 4.13.1) and deleted profile folder, it works with the variables. i think its better when i delete some desinformation in my post. now it works as it should. thank you for your help, and sorry for bothering you.