Help needed with enabling the digital module

Hi,

My current code: Once the captureIT.txt is found, the FPGA target in invoked and data acquistion is perfomed. I have used 20 Analog channels and 1 digital channel for data acquisition code.  

But I need to add in a part where if Drive.txt is found, I will have to enable only one more digital module to high and not the rest.

Knowing that there can only only one bitstream file, How do I make changes in my realtime vi so that I can perform both the cases by invoking the fpga target once? 

Any ideas on how do i proceed?