assign pressure to line geometry in 3D

Hello,

I have a question about assigning pressure to a line in 3D geometry.

I want to assign pressure of 0 in a line as a well in porous 3D media in Darcy's law module.
I tried with pointwise constraint, and wrote '0-P' in constraint expression.
The study is computed without any errors, but the pressure seems to be not assigned according to the result.
I wondered if there was any way for this!

thank you!


Hwajung