HSV Slider - for custom color on model

Trying to figure out what the BP would look like that would control the HSV for a material? I have an LED in the emissive channel and want to make the color changeable. I know that HUE shift is suppose to do this but the formation I have right now doesnt seem to be working. I also have no clue how to link that put to the slider in the GUI. Thanks for any and all help you can provide.