Visualization of cumulative value of a variable with respect to time.

Hi everyone,
I have multiple vtk files of a process (around 50 time-steps). Visualising a particular variable with different time steps is straight forward in Paraview. I am interested to see the visualization of the cumulative value of a particular variable with respect time. Is it possible to do directly in the Paraview instead of changing the vtk files?
Thank you very much