[Qgis-user] Cannot use expression to determine line widths

[Tyler Veinot]

Hello;
I have a map using expressions to calculate line widths based on field
values that I setup in v2.14 to 2.16. I recently upgraded to 2.18.3 and
have been trying to tweek some of the maps and noticed that the expression
option for line widths is now grayed out. I don't know when exactly this
happened and I was wondering if anyone else noticed and/or had a
solution/work around.
Thanks;
Tyler
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