I have 2 GPUs and only want to mine with 1 of them. In other miners i need to edit the batch file like this: -d 1
How do I make it in the bminer? I already tried this but it wont work.

For example:
-devices 0,1,2,3,5 means you are using No. 0,1,2,3,5 GPU and you skipped No.4 GPU.