diff --git a/ADApp/op/adl/LightField.adl b/ADApp/op/adl/LightField.adl
index d018e90..5057251 100644
--- a/ADApp/op/adl/LightField.adl
+++ b/ADApp/op/adl/LightField.adl
@@ -3040,3 +3040,18 @@ text {
 	limits {
 	}
 }
+"message button" {
+	object {
+		x=955
+		y=590
+		width=80
+		height=20
+	}
+	control {
+		chan="$(P)$(R)LFUpdateExperiments"
+		clr=14
+		bclr=51
+	}
+	label="Update"
+	press_msg="1"
+}