1. Drain pineapple, reserving juice; set fruit aside.

2. In a saucepan or microwave, bring pineapple juice and water to a boil.

3. Add gelatin; stir until dissolved. Stir in pie filling and cola.

4. Pour into a serving bowl. Refrigerate until slightly thickened.

5. Fold in reserved pineapple. Refrigerate until firm.