ACAD LT 2026 How do I make this text show the length of the line?

[BillAllenSE]

How do I make the text (L=   ) show the length of the line?

TIA

[Libbya]

I'd use an attribute with a blockplaceholder field.  See attached.

[kamil_pajakH724R]

 this way 😉

[BillAllenSE]

I watched this a dozen times and keep missing the "magic step".

[kamil_pajakH724R · Accepted solution]

Sorry, the right-click menu options didn’t get recorded, so I’m uploading the video again.

[BillAllenSE]

Fantastic!