How to enter boundary conditions in NX from an external file?


I am trying to perform a thermal simulation in NX. Currently, I am using ANSYS FEM and SIM model to do so.

Now Imagine I have a 2D model which is a square in shape. I have meshed it with Plane55(4) elements. I want to apply convection on three sides. Now to do so I can create convection constraint on each and every side. 

Is there any way that I can read all BC's from an external file in a single step and perform the thermal simulation.


Here the example considered is simple. Imagine more than 100BC's.    

I cannot create every time a convection zone and then apply constraints.   


Any existing document will be useful