Dissolve each box of jello separately, using just one cup of boiling water per flavor.
Pour into each container and chill it for 4-6 hrs or overnight works better.
Once solid, cut the flavors of jello into small blocks and mix carefully in a glass or pan.
In a separate bowl, dissolve 2 envelopes unflavored gelatin in 2 cups hot water. Let cool a bit
Pour in the condensed milk and stir well. Let it cool.
Pour cooled milk mixture over jello and chill for 4-6 hrs or overnight. Cut into desired shape; serve and enjoy!