Update readme.md

dbuezas · web-flow · commit 189277ec98fc · 2024-03-10T22:30:43.000+01:00
diff --git a/readme.md b/readme.md
@@ -265,7 +265,9 @@ Note that `5minute` period statistics are limited in time as normal recorder his
 
 ## show_value:
 
-Shows the value of the last datapoint as text in the plot.
+Shows the value of the last datapoint as text in a scatter plot.
+
+> Warning: don't use it with bar charts, it will only add an extra bar and no text
 
 Examples:
 
