The GE 12727 doesn’t support double tap. That’s a feature that is available with some z-wave+ products. The GE 14292 does support it with this DTH by @nuttytree. Also, the Homeseer that @marktheknife suggested supports it as well.
With that said, a single tap should turn the light on to the brightness it was last set to. You can also use a smartapp like Smart Lighting to set it to 100% (99% really lol) on a single button press using the “Turn On & Set Level” method or webCoRE, Stringify or SmartRules, etc.