can't modify the line width

[Anonymous]

Hello! I ccan not made the wall's line behind the bed thinner, the wall is a mesh, it  was exported as a 3d from 3dsMax. Also I can make the line thicker but not thinner, this applies to all the imported objects(see the night stand). Is there a way to solve it? Or can I convert this mesh into a block(like the bed)?

[imadHabash]

>> I ccan not made the wall's line behind the bed thinner

did you mean that while plotting or what ?  also wee need a CAD dwg file please for testing . 

[Anonymous]

I sent the file, i try to modify the line on the model sheet. I forgot to say that I am a beginner so sorry if I do not understand many things

[imadHabash]

you may need to turn OFF  LWDISPLAY ( System Variable ) . 

Command: LWDISPLAY
Enter new value for LWDISPLAY <ON>: off

also you may need to :

• change your visual style to 2D wireframe .
• your file is too big ... try to clean it . >> Click << 

[Anonymous]

it is not working, i can not modify the line, i can't even make it thicker, and before i could. what am i doing wrong?