Amish Rhubarb Jam

4 cups rhubarb (diced)
4 cups sugar (I used 2 cups)
1 small can crushed pineapple (14 ounces)
3 ounce box cherry jello
Cook rhubarb with sugar for 12 minutes. Add pineapple and cook three minutes. Add jello mixing well and pour into jars and seal.