Check layer with variable name (always starts with D or d) has stroke set to Overprint

Hi,

I am trying to find out if it's possible to cover variables in layer names: something like with operator OR

Currently I have capital letter 'D' but also would like to include 'd' in the same check, so Acrobat can check this or that. I am trying to avoid duplicating the check with option for small 'd' (it will end in messy and lengthy list of checks).

Is this possible? I wish simple Regex codes could be used here...