I have recently attempted to stretch my abilities to the limit and produce a new Passenger information screen with a digital clock at the bottom, however i have had issues creating the clock element itself.

The issue I'm having is tha either the clock section is present at the bottom of the board but it is static and doesn't display any dynamic time, which it is supposed to, or only the hours and minutes (sometimes only the seconds) display without the rest of the board model, with no rhyme or reason as to why it is happening.
I was wondering if anyone could point me in the direction of a tutorial or help me to fix my issue as I haven't found any documents online giving detailed advice on exporting a clock from blender and getting it working in the game?