Custom fields in CSV backtesting data??

Hi,

Is it possible to have extra custom fields in the backtesting csv file that I can then "link" to parameters/variables realtime in the backtesting?

example:

My robot runs basing it's decisions on the realtime tick values but also external data gathered and stored in a database e.g. if the "trend" of the market which I grab from outside of calgo is in the right direction.

It would be really helpful to be able to merge these "trend" values into the backtesting csv that I can link to the variables/paramters in the robot code so the decision it made "live" would be the same if I was backtesting.

Hope this makes sense?