I'm trying to use rfxplot to extract individual percent signal change from con_images.

When I tried to fill in "[1, 0] × Tick (1 group only) "  box, I got error message as "[1, 0] matrix required. " 

How should I fill in "[1, 0] × Tick (1 group only) " box ?

I tried to use [1, 0] to fill this box, but  I got same error message that I wrote.

I'm new to this extension, therefore this may be a naive question. However, I really need to solve this problem. Any suggestion will be highly appreciated.

Thanks in advance,

Yuko