add notify(img) doc for in-place Observable update (#3195)

MakieOrg · Aug 31, 2023 · 48fa1f9 · 48fa1f9
1 parent e4e50d1
commit 48fa1f9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/docs/explanations/nodes.md b/docs/explanations/nodes.md
@@ -72,6 +72,9 @@ nothing # hide
 ```
 \show{code3}
 
+!!! note
+    If you updated the `Observable` using in-place syntax (e.g. `img[] .= colorant"red"`), you need to manually
+    `notify(img)` to trigger the function.
 
 !!! note
     All registered functions in a `Observable` are executed synchronously in the order of registration.