[sticklord]

I'm not a proffessional but i think because "anticipation" is a local variable the layout can't access it.
Try:

lib.createAnticipation = function(self)
 
    -- your code
 
    self.anticipation = anticipation  
end
 
lib.updateAnticipation = function(self, event)
    if self.unit ~= "player" then return end
    anticipation = self.anticipation
    
    -- your code
        
end