I already got the menu with the right dvars.
Code:
					self setclientcvar("killstreak_1", "value");
					self setclientcvar("killstreak_2", "value");
					self setclientcvar("killstreak_3", "value");
killstreak_1 is for the first box and must have value 1 if killstreak 1 is chosen , value 2 if killstreak 2 is chosen. Killstreak_2 is for box 2 etc. Same for the other boxes.
the values of the killstreaks are killstreak1, killstreak2, etc