Trade Entry via API

Hi,
Is there a way to enter a profittarget=10% instead of issuing a dollar amount? Seems like this should be a pretty standard feature but I cant seem to find anything.

This would be so that my profit target is calculated when trade is filled. I calculate it before I enter the trade but in fast moving markets the price has changed and my calculations are off. It would be nice to just say I want to set a stop at 10% or my cost basis. Thanks!

I have submitted your suggestion to the developers for consideration.

Thanks Melissa - is there any way that I can be notified if this change is going to be implemented?