Conflict between UDF and combustions models
 

I'm simulating a furnace with some slabs in its interior. I'm using the non-premixed combustion model to simualte combustion.
I wrote an udf, in which the temperature distribution of each slab is copied to the slab in the next position.

When I run the udf (on demand ) with the combustion model activated, although no errors occur I can´t get the temperatures copied. The funny thing is that when I desactivate the combustion model everything works just fine.

Anybody has any idea why does this happen?