Prop Limit for different ULX ranks

[Bazoogle]

So i asked about this not too long ago, and someone recommended URS. This worked great, but it didn't get everything that i wanted. I need a way to change the limit for things such as wheel, thrusters, and different wiremod limits for the different ULX ranks too. So i have tried this command to put in lua/autorun and it doesn't seem to work:
do

	if GetConVarNumber("sbox_maxthrusters") <= 5 then
		RunConsoleCommand("sbox_maxthrusters",5)
	end
end

hook.Add( "PlayerSpawnThruster", "ThrusterLimit", function(ply)

	if ply:GetCount( "thrusters" ) >= GetConVarNumber("sbox_maxthrusters") and ply:IsUserGroup("Owner") then
		RunConsoleCommand("sbox_maxthrusters", GetConVarNumber("sbox_maxthrusters") + 200) 
		ply:ChatPrint("You've hit the Thruster Limit, But we can add more props!")
		return false
	elseif ply:GetCount( "thrusters" ) >= 5 and ply:IsUserGroup("Owner") then
		ply:ChatPrint("You've hit the Thruser Limit")
		return false
	elseif ply:GetCount( "thrusters" ) >= 3 and ply:IsUserGroup("admin") then
		ply:ChatPrint("You've hit the Thruser Limit")
		return false
	elseif ply:GetCount( "thrusters" ) >= 1 and ply:IsUserGroup("VIP") then
		ply:ChatPrint("You've hit the Thruster Limit")
		return false
	elseif ply:GetCount( "thrusers" ) >= 0 and !ply:IsUserGroup("admin") then
		ply:ChatPrint("You've hit the Thruser Limit")
		return false
	end
end)

what DOES work is if it's above 5, then it will change it down to 5... But that is 1 universal number... I tried editing URS to work with Thrusters/Wheels/Balloons ETC, however I now feel as though those things are not the same process as props... How can i set a limit so i can build epic things, but new players cant spam???

[log404]

Put the file in lua/autorun/server

[Bazoogle]

Sorry for the bump, but i have put this aside and worked on other things, and i have come back to this a started playing around with it. So it does work with props and the prop limit, but i jsut feel like i dont have the letters right for thrusters. here are all the different possibilitys
-thruster
-thrusters
-Thruster
-Thrusters
and instead of testing each one, which could take forever, i was wondering if someone knew how i would letter the tools and such to work too. I wanted to get balloons, thruster, hoverballs, etc.
Can anyone help?

[crazyscouter]

You should be localizing the counts and usergroups at the beginning instead of doing different calls in each statement. You can use the CanTool hook for tools.

[Bazoogle]

I dont want to completely remove access from that tool, but instead, provide different limits for how many items can be placed with taht tool with the different groups.

[crazyscouter]

Then record a variable on the player and increase it with each tool use. Then proceed to check if they've hit the limit for that group.