Lua doRemovePoints error

[Selenotes]

function doRemovePoints(cid, points)
  local Info = db.getResult("SELECT `premium_points` FROM `accounts` WHERE `id` = " .. getPlayerAccountId(cid) .. " LIMIT 1")
   if Info:getID() ~= LUA_ERROR then
   db.executeQuery("UPDATE accounts SET premium_points = " .. points .. " WHERE id=" .. getPlayerAccountId(cid) .. ";")
   Info:free()
   return 1
   end
end

That code is suposeed to remove you points from DB but when I use it with 1 prem points with a balance of 200 prem points I just get that my prem point balance is 1 prem points..
any help?:w00t:

 

[Cronox]

function doRemovePoints(cid, points)
  local Info = db.getResult("SELECT `premium_points` FROM `accounts` WHERE `id` = " .. getPlayerAccountId(cid) .. " LIMIT 1")
   if Info:getID() ~= LUA_ERROR then
   db.executeQuery("UPDATE accounts SET premium_points = `premium_points` - " .. points .. " WHERE id=" .. getPlayerAccountId(cid) .. ";")
   Info:free()
   return 1
   end
 end