when dimension in a drawing top to bottom or left to right the tool grabs the first line but wont grab the second line
Please add a screen shot (or two) to better illustrate your issue.
Also, please outline your workflow steps leading up to your issue.
As Mr. Chandler indicated, more information would help us to help you better. However, I'll take a stab at it. Are you having problems with the dimension value or dimension line getting in your way? If yes, the solution given by Leszek Paprota at Smart Dimensions should help.
Also, if you don't already have it turned on, go to Tools > Options > System Options > Display and check the box for "Dynamic highlight from graphics view". With that option selected edges, faces, etc will highlight in orange under your cursor before you click to select, and it will work even if part of the dimension is in the way.
As both mentioned, more details would be helpful, but, personally, I find when SW is acting a bit strangely:
1. I try to back out to a "stable state". For example, if I'm in a sketch, I'll close the sketch, rebuild (if needed) and reopen the sketch.
2. Sometimes, SW just decides I don't NEED to do what I'm trying to do and doesn't do it. That sounds weird but what I mean is that usually means I'm ACTUALLY doing something different than what I think I'm doing. This is especially true when creating drawings.
Just a couple of things to consider.
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