Setting initial layer build plate temperature in start up gcode

[yellowfire 0]

I have the Prusa i3 Mk2S. In the Cura profile for the machine it has the lines:

M140 S{material_bed_temperature} ; set bed temp

M190 S{material_bed_temperature} ; wait for bed temp

Does anybody know the variable name to put into the start gcode so that it set it for the initial layer build plate temperature?  So far my searches haven't been fruitful. I already tired material_bed_temperature_initial and material_bed_temperature_initial_layer. If anybody knows a list of the variables that would be greatly appreciated!

Edited July 9, 2017 by Guest

[ahoeben 1,968]

M140 S{material_bed_temperature_layer_0} ; set bed temp
M190 S{material_bed_temperature_layer_0} ; wait for bed temp

[ahoeben 1,968]

All the variables are in [cura application folder]/resources/definitions/fdmprinter.def.json, though that is not a simple list.

[yellowfire 0]

M140 S{material_bed_temperature_layer_0} ; set bed temp
M190 S{material_bed_temperature_layer_0} ; wait for bed temp

Thank you!