polyline fill tied to hatch
FILL command affects all objects: it cannot be exclusive to one object type. In old and current versions, it is not exclusive.
Do you just need to use MLINE command instead of PLINE?
@Anonymous wrote:
I want to have polyline not filled and boundary area hatched. ....
I may misunderstand what you are asking, but if you have a Polyline with width, and you want its width filled with a Hatch pattern instead of being filled solid:
try PLWtoOutline&Hatch.lsp, with its PLWOH command, >here<. Look through the file before you use it, for things you should edit about the kind of pattern you want -- edit the pattern name, "un-comment" some lines of code, etc. [It has the limitation that it works only on Polylines with constant or global width. There may be things "out there" that can do the same with varying width -- try some Searching.]
Kent Cooper, AIA 
@Anonymous wrote:
I want to have polyline not filled and boundary area hatched. ....
The image doesn't really describe what you're after.... If what you mean is that you want the Hatch pattern to not fill the entire Polyline including where it crosses over into the "C2" area, but rather to fill only the area inside the Polyline that is also outside C2, that would be the difference between picking internal points and selecting objects. In the BHATCH command's dialog box, play with these two options:
Or, if you're at the command-line prompts in the HATCH command, you're probably in select-objects mode, but you can change to picKing internal points instead with the appropriate option:
If those don't do it for you, a more detailed explanation, or an image including and identifying both "right" and "wrong" outcomes, would be helpful.
Kent Cooper, AIA