Using dynamicEval with custom PE registers

PE Extended.lua

ProbablyEngine.condition.register("power.regen", function(target)
	return select(2, GetPowerRegen(target))
end)

ProbablyEngine.condition.register("gcd", function(target)
	local gcd = (1.5/GetHaste(target))
	if gcd < 1 then
		return 1
	else
		return gcd
	end
end)

rotation.lua

local function dynamicEval(condition, spell)
	if not condition then return false end
	return ProbablyEngine.dsl.parse(condition, spell or '')
end

{ "spell name", 
  {
    "condition1",
    "condtion2",
    (function()
    	return( dynamicEval("player.energy") + (dynamicEval("player.power.regen")*dynamicEval("player.gcd")) < 50 )
    end)
    "condition4",
}, "target", },