Writing serials to xbee

Hi, so my project needs me to be able to use LabView to send serials to an Xbee that's connected to my computer through USB and a Xbee Controller. This Xbee sends the command to another Xbee, which is stacked on a Xbee sheild and an Arduino Mega. I'm able to send the serial commands that I've programmed into the Arduino Mega through X-CTU and the Mega does the commands correctly and quickly, but I'm unable to send them through LabView. Any suggestions?

This sounds like a question about how to use labview then?