# Doubt about Integrate Variables filter
**URL:** https://discourse.paraview.org/t/doubt-about-integrate-variables-filter/14291
**Category:** ParaView Support
**Created:** [March 28, 2024, 5:33pm UTC](https://discourse.paraview.org/t/doubt-about-integrate-variables-filter/14291 "2024-03-28T17:33:14Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@virnaco](https://discourse.paraview.org/u/virnaco)
#### Post date: [March 28, 2024, 5:33pm UTC](https://discourse.paraview.org/t/doubt-about-integrate-variables-filter/14291/1 "2024-03-28T17:33:14Z")
Hello,
I’ve been trying to analyze results in Paraview from a simulation of what I did in Elmer of a 3D reactor. My ultimate goal is to compare the results between this 3D reactor simulated in Elmer and a 2D reactor simulated using FEMM.
On the Elmer, I applied a current of 30,000A to the coil and checked through ElmerVTK that this current seemed ok. However, on Paraview the result was different. In Paraview, I used Slice to then integrate the coil surface through the Integrate Variables filter. Note that the coilcurrent values in the X Y Z axes obtained with this filter are different from those observed in the other column and are also not in accordance with the expected results.
I am sending the pictures , .vtu and .fem files below.
[Reactor.zip](https://discourse.paraview.org/uploads/short-url/30AmMCk1mPCyNzNTlYxSEstqywA.zip) (1.4 MB)
Could you help me understand where I might be going wrong?
I’m new to these simulations and I’m still learning. Thank you for the help!
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### Author:  [@virnaco](https://discourse.paraview.org/u/virnaco)
#### Post date: [March 28, 2024, 7:17pm UTC](https://discourse.paraview.org/t/doubt-about-integrate-variables-filter/14291/2 "2024-03-28T19:17:24Z")
Or is there any other suggestion how to check if my results from 3D reactor simulated in Elmer are similar (or not) to the 2D reactor simulated using FEMM?