As far as i know you can't, but you can work with the numbers given just as if they were whole numbers. For example, we want to show a message if the number is 1 and another message if the number is two, working in a scirpt. If we use as condition that the number must be 1, we won't ever have the message since the number can be 1.321321 or 1.0032, for example. But we can set that if the number is less than or equal to 1, now we are actually working as if it was a whole number. so we can create a script like this:
_number = random 2
? (_number <= 1) : goto "MSG1"
? (_number > 1) : goto "MSG2"
#msg1
Hint "Helloooo its me!"
goto "end"
#msg2
Hint "Hello its me but with another message"
goto "end"
#end
exit
So this is the idea. Hope it helps