Use the sliders. x and y change the position HP and Max HP just change HP and max HP respectively Percent Length changes the length
Thanks to Javier R100 for the HP bar idea. To Javier - I changed it so you can change the position little more easily - and made it so you can edit the length and width/size I made it not rainbow effect because that was what seemed to cause a major part of the lag. I also made it so it only does the costume stamping block only if there is a change in one of the values/variables. The color is just a simple green for health and red for the rest of the bar. Around 30 min of work and revising.