[mosaferkarbala]

hello
i faced some problem importing some boundary conditions from openfoam to foam-extend. specifically in case of add and compile variableHeightFlowRate as outlet for multiphase interfoam which is in $FOAM_src/finiteVolume/fields/fvPatchFields/derived/variableHeightFlowRate.
the problem is with Function1 include since there is no Function1 FOAM_src/foam/primitives/functions.
i noticed that in the code they just used function1 for 2 times
//- Inlet integral flow rate
autoPtr<Function1<scalar>> flowRate_;
and
flowRate_(Function1<scalar>::New("flowRate", dict)),
my question is :
is there a way to introduce this scalar with whats in foam-extend or not?
if not,
is there a way to add function1 to foam-extend or not?

sorry if my question is elementary for u guys but your help would be very appriciated as soon as i see.
thank you all