u/AntiCrueltyFree

I have two lamps which I would like to wire into a socket together with an in-line dimmer. I thought I bought the right switch but now that I'm testing everything, I'm having doubts. Here is a photo of the bulb data (there will be two) and the switch I bought.

The switch has three terminals and it seems to work in that I can get it to switch on and off, but the dimming function does not work. The switch has a common terminal, and two switched terminals. Im my two-wire lamps I simply connect all of the grounds to the common, the constant to one of the switched terminals, and the lamp positive to the other switched terminal.

Am I doing something wrong, or did I buy the wrong switch? Any help is appreciated. TIA

Dimmer Switch Wiring