Voltage in VexCode

I was coding some code and I could not figure out how to set motors to run at a specific voltage in VexCode like I can in PROS. Is there a way to do that? I was trying to use LBDrive.spin(directionType::fwd, voltageLeft, velocityUnits:: ); but VexCode refused to take anything like voltage.

for example.

LBDrive.spin( fwd, 10.0, voltageUnits::volt );

Hey thanks that helps.