[Unsolved] Random trigger order O_o

In my game i want to be able to make some thing happen and maybe next time something differnt to happen and the thing before to happen later O_o

ill put it like this for a test trigger
i want it so that theres two horses pack horse and a armored horse.
i want it to randomly select one of the two horse triggers
so that 1 horse with a randomness of 50/50 of which one it is. O_o i didnt explain that very well i hope you under stand what im trying to get.

Event - Something Happens
Condition - Event You Want Equal to True
Set PercentChance(1) = 1
Set PercentChance(2) = 2
If
PercentChance = 1
Then
Select Armoured Horse
Else
Select Pack Horse

I guess you could use this, I don't know, I'm not at home so I can't check it out.

umm WHAT ?

anyway
what you can make random is: you can pick a random number between numbers you specifed
like you can make game pick a random number between 1 and 5
it works like
Random integer between 1 and 5 (1 and 5 is included as I know but I maybe wrong ofcourse)

O_o well i have made a bit of an advancement.
the only probelm is how to i generate the random integer? :(

Set RandomInteger = Random Number between 1 and 5 where RandomInteger is an Integer Variable