My Line weights are not showing up on my model space?

[Anonymous]

I've been using AutoCAD 2015 for awhile now, but just recently I've been having problems with changing my line weights. Everytime I try to change the thickness of one line, as I'm scrolling down the different line weights, all of a sudden there is a blue highlighted box on my model space and when I choose my line weight it doesn't change. Even though I have checked the display line weight box. I don't know what the problem is, it's quite odd.

[nestly2]

What are you using to change the (lineweight) properties of the object?  The Properties Palette,  the Ribbon Properties Panel, something else?

A screenshot of the lineweight list and the mysterious blue highlight box would be helpful.

[Anonymous]

step 1: I choose the line i want to change 

step 2: I went to go choose the line weight 

step 3: the blue rectangle appeared, i choose my line weight and it doesn't change 

[nestly2 · Accepted solution]

Type PICKFIRST at the command line.  If it's "0", change it to "1"

[Anonymous]

Oh, wow thank you so much! It worked, I'm so happy right now haha