Working in negative direction

[Anonymous]

I'm working on the bottom side of an object and need to offset a plane in the negative Y direction and negative YZ plane but it will only let me do it in the positive direction. So basically, I need my negative Y to be positive. It's currently facing down on the ViewCube  (it's upside down) and I need it up. I don't know how to flip it, if that's even possible. 

[laughingcreek]

we might need to see what your doing.  typically putting a - in front of the numerical input will do the trick.  can you post a pic, screen cast, or model?