HELP! Use Stored Color Gradient Option Greyed Out

I am trying to animate a gradient inside of Toon Boom harmony Premium but for some reason the option to store the gradients position, rotation and scale so I can copy and paste it to other frames is greyed out. I have attached an image that showcases the problem. Any help would be greatly appreciated.

Greyedout.PNG

Thanks for the help keep helping others too.

mysainsburys