lua script count rdp sessions problem Options

[Daphi]

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-- Version: 4.0
-- Date: 2009-10-29
-- Description: Counts the number of instances of a process that are running
-- Arguments: process name, minimum count, maximum count
--
-- Copyright © 2010, Intellipool AB
--
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without modification, are permitted provided that
-- the following conditions are met:
--
-- 1) Redistributions of source code must retain the above copyright notice, this list of conditions
-- and the following disclaimer.
-- 2) Redistributions in binary form must reproduce the above copyright notice, this list of conditions
-- and the following disclaimer in the documentation and/or other materials provided with the distribution.
-- 3) Neither the name of Intellipool AB nor the names of its contributors may be used to endorse or promote
-- products derived from this software without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--
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-- This function is called by INM to retrieve a script configuration

function OnConfigure()

-- The variable returned must be called "Config" so INM can find it.
Config = LuaScriptConfigurator()



-- A parameter configuration, add them in the order the script is extracting them.
Config:AddArgument("Maximale Anzahl RDP Sessions","Monitor will go into alarm if the number of instance running rises above this number.",LuaScriptConfigurator.CHECK_NOT_EMPTY)

-- Set the entry point, this is the function called by INM
Config:SetEntryPoint("main")

-- Done with configuration, return the object
return Config
end




-- This is the entry point

function main()

max = tonumber(GetArgument(0))
ok = true
result = ""
SetExitStatus("OK",true)


--Query WMI for a list of all processes running on the machine.
Query = TLuaWMIQuery();
sAbfrage = Query:Execute("Select ActiveSessions from Win32_PerfRawData_TermService_TerminalServices");
abfrage2 = string.sub(abfrage, string.find(abfrage,"%d")

--if (abfrage2 > max) then
--result = "The number of running instances is " .. abfrage2 .. " which is more than " .. max
--ok = false
--else
--result = "The number of running instances is " .. abfrage2 .. " which is between " .. min .. " and " .. max
--ok = true

--end
SetExitStatus(abfrage2,true);

end

get boolean error or nul error, what can i do?