substitution of whipping cream for water in jello

This is the first time I have been on the internet for over 5 years so please excuse my slowness with this site. I have been successful using heaving whipping with unflavored gellatin mix with added sugar and vanilla. I have used both a mold and a big crystal bowl, depending on how much I was serving and how much I made. May I substitute heavy whipping cream instead of water to make flavored jello or gellatin mix. I would now like to use lemon or strawberry flavored jello or some other flavor of jello mix that has the sugar in it and the color to make a desert and use the directions as if using water. To enhance it, I use fresh fruit or even cooked preserves such as raspberries or sour cherries. This desert is called "Russian Cream". I am also thinking of using lemon curd to put on the side, which is where one would put the cooked preserves or drizzle on top, slice fruit, lemon curd, whatever sounds good to you. Other additions can be added to the unflavored gellatin to make it lighter like half and half (diet version) or bolder like cream cheese or even slice up fruit very small, dry and mix.

Update in answer to comments---Here I am again with news of what has happened with the substitution. It came out okay. I realized I had to play with the sugar as the gellatin mix or "Jello or Jelly" already had sugar in it. I did heat up the cream and mixed things up accordingly and put in the fridge. I looked up Pannacotta and found that different various versions resembled what I was making, Russian Cream. It is interesting that various cultures have the similar versions of same things and I realized that Flan was also included in this mix. Today I made the original and nothing beats it. Thanks for the adventure of the site.