T5/T6 Start at round x

[Nibbler Doo]

Trying to recreate some YouTube videos where people start on round 100 as a challenge.

I created a simple .gsc script to start on round 100 which works for the amount of zombies and the zombie health but the zombies are all walking like round 1. Is there a way to change the move speed/everything else to match round 100?

main()
{
level.round_number = 100;
}

[Lemon]

Nibbler Doo hmm i think the function is

	self.zombie_move_speed = "walk/run/sprint/super_sprint";

[Nibbler Doo]

Is there a file or constant I need to import for this to work?

level.zombie_move_speed = 71; // works
level.zombie_move_speed = "super_sprint"; // doesn't
self.zombie_move_speed = "super_sprint"; // doesn't

gsc script. I copied constants from another post not sure how accurate they are for round 100

#include common_scripts\utility;
#include maps\mp\_utility;
#include maps\mp\zombies\_zm_utility;

init(){
	level.round_number = 100;
	level.zombie_move_speed = 71; // sprinters - not sure how fast zombies on round 100 are. I assume super sprinters by then
	level.zombie_vars["zombie_spawn_delay"] = 0.08;
}

EDIT: Thanks for the help. After setting the round number manually I am able to adjust the move speed to the appropriate value with:

level.zombie_move_speed = level.round_number * level.zombie_vars["zombie_move_speed_multiplier"];