Grid adaption problem
 

I'm simulating a natural gas furnace with induced swirl in the fuel inlet, using a QUAD mesh. The radiation model I'm using is DTRM (what seems to be relevant here).

I need to adapt my grid near the inlet, but it doesn't complete the refinement process and always displays a message like this:

"Variable Vgf_DTRM doesn't have valid interpolation flag

Error: Internal error at line 2397 in file '..\..\src\flow.c'.

Interpolate_Cell_Data_List: don't know how to interpolate variable.

Error Object: ()"

Does anyone have the solution to this problem? Thank you so far for your attention,

-William-