Net Class to Dummy net spacing

Hi All,

I am looking for a way to set constraints between a Netclass I have to the dummy pins.

I have some high voltage area that requires much bigger spacing than rest of the circuit that is causing me some headache in getting the required spacing.

 I would like to keep the default setting for lower voltage area and adjust the constraints by using net class to net class spacing.

I have grouped few nets to Net Class "A" and  another set to Net Class "B".  I am able to set the constraints so that spacing between default, "A", and "B" is what I want, but the spacing from "A" to Dummy net pins or "B" to Dummy net pins remains to be default setting.

Can anyone help me get these required spacing to these dummy nets?

I know using regions that we could get these results, but I would like to avoid the regions if possible for this case.

Thanks in advance.