Indesign: GREP lookbehind in paragraph style does not search for End of Paragraph

Question

I'm trying to apply a character style to symbols after End of Paragraph (with some symbols before it) by GREP.

I've tried these combinations:

.~b^\K.+
(?<=.~b).+
.\r\K.+
(?<=.\r).+

They all work fine when I use them in Searh window, but if I enter them into GREP Style tab of my paragraph style, nothing changes. How can I resolve this problem?