[Davidvia0]

Guys, i need urgent help ... how to change value of membrane conductivity (PEM and electrolysis module) using interpret option? I don't have access to the compilator on this PC so I have to do this by interpreted UDF.

Normally conductivity of membrane is a function of alpha, beta and water content .. but I want to set it constant (10). How to do this?

DEFINE_Membrane_Conductivity(real lam, cell_t c, Thread *t)
{
real sigma=17.1223;
return sigma;
}

I was trying just to write

real Membrane_Conductivity(real lam, cell_t c, Thread *t)
{
real sigma=10;
return sigma;
}

but nothing ...