How do I get a value on leave a trail?



How did I get a value on color on leave a trail!
When I drag a value to color and release then the value be deleted!
Please help!


I just dragged a value to the trail color and had no problems


It's don't work for me!


It's work now!
You can't drag a value to a leave a trail when it is in a check once if!:blush: