Dependent Variables in 'wait'

everything.is.fine

Hi guys. I'm trying to define a dependent variable in KSP and use it for 'wait' as $waiting_time. Here's a simple example. The error message is 'ERROR (line 7): variable "$x" was not declared. I can't see what's wrong with it. Thanks in advance.

on init
declare $Time := 5
declare $x := 2 * $Time
end on

on note
wait($x)
end on

everything.is.fine

I just solved it:

on init
declare $Time := 5
declare $x
$x:= 2 * $Time
end on

on note
wait($x)
end on

Thanks