Nextbot BehaveUpdate

[MysticLlama]

i'm trying out the Behave Update Function for a Nexbot i'm trying to code, where it updates every time it's target comes into Melee range.
I use the following:

function ENT:BehaveUpdate( fInterval )

	if ( !self.BehaveThread ) then return end
	

local range = self:GetRangeTo(self:GetEnemy())
print(range)
	
	if(range < 75) then
			self:ResetSequenceInfo()
			self:SetCycle(0)
			self:SetPlaybackRate(0)
			self.loco:SetDesiredSpeed(0)
			self.Enemy:TakeDamage(10,self)
			
			self:PlaySequenceAndWait(hit)
			end
	
	

	local ok, message = coroutine.resume( self.BehaveThread )
	if ( ok == false ) then

		self.BehaveThread = nil
		Msg( self, "error: ", message, "\n" );

	end

end

but the print returns constantly as nil
and the console spams this error:

[ERROR] addons/nextbot/lua/entities/cp_nextbot.lua:178: attempt to compare nil with number
  1. unknown - addons/nextbot/lua/entities/cp_nextbot.lua:178

(line 178 is the "if < 75" statement)

however, if i take out the code, and simply leave in the variable definition, and the print, the variable works just fine, and spams my console with the range from it's target.

anything i'm missing?

[MysticLlama]

nothing?
alright then
:C