Temperature boundary-conditions on internal walls

edit

I'm developing an energy model to describe the behaviour of two rooms and I'd like to impose a boundary condition on the internal wall. In particular, I measured the surface temperature on the adjacent rooms and I'd like to use this data as boundary condition for the rooms that I'm studying. I tried to use "SurfaceProperty:OtherSideCoefficients" and a file as schedule to import the temperature I measured, but it deos not work since the schedule requires one year of data and I have just few months. How can I introduce the data in my model?