[TxMt] foldingStopMarker as two empty lines

[sergey]

Dear All,
I need your help.

I have to work with text file where block delimiter is more than 1 empty lines.
How to make regex for foldingStopMarker
I was trying foldingStopMarker = '(^$){2,}';
but without success.

Thank you in advance.

Example
"
Block1	
text
text
text

text
text
text


Block2
text
text
text

text
text
text


''