The script has a lot of comments in it for instruction. It is the same one as the first one, except it uses the jumptolevel command instead.
So up at the to around line 50 is where you enter the map name you want to call.
If you only want one choice then change this line
local max_dest = 4
To
local max_dest = 1
There is a lot. start from the top of the script and get things setup. That text file is the instructions.
I have a tennant out of water and Irate. I will be back in a bit.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit, Screen resolution 1680 x 1050.