How to use condition of presence?

[kserks96]

I have solder X and solder Y. Only one should spawn at the mission start.

I tried to put folloving code in init.sqf:

r_var = random 1;
if (r_var > 0.5)
	then{
		x_var = true;
		y_var = false;
	}
	else {
		x_var = false;
		y_var = true;
	}
;

But none of them is present when i start the mission.