Define init
 

Hello all!
I have some doubts regarding DEFINE_INIT, mainly its priority in Fluent's algorithm and its application.

Here's my case:

A UDF (with DEFINE_INIT) allows initilisation of a sub domain's thread VOF value. This is seen in display-contour-vof. Next, when a calculation is run with this value, even for a single time step, the value of VOF reverts back to its default value in the solution initialisation box. This should not be the case.. the calculation should continue with the UDF initialised VOF value. What am I missing?

Any ideas? Thanks in advance!
Best,
A.B.