@marcus611a You have to know the specs on your LED Driver. LED lamps operate on highly regulated direct current supplied by the electronic driver circuit. Most standard drivers now have connections for a 0 to 10VDC, a potentiometer or a variable current source to control brightness.
Most will also accommodate a range of AC voltages from the power company, typically 110VAC to 270VAC 50/60Hz, but lamp brightness isn't determined by the AC supply voltage. If you can post the details of the lamp driver (manufacturer and model number) I can likely find more specific info on it.
If what I've said is making you scratch your head, talk to a good electrician rather than try anything yourself. Electricity is very dangerous and 220VAC Can be quite lethal and starts fires when not dispositioned per the electrical codes.