1 files changed, 1 insertions, 3 deletions
diff --git a/js/NonLinear/LOOKUP_f.js b/js/NonLinear/LOOKUP_f.js
index d1d2abab..9a22b665 100644
--- a/js/NonLinear/LOOKUP_f.js
+++ b/js/NonLinear/LOOKUP_f.js
@@ -16,9 +16,7 @@ function LOOKUP_f() {
         return this.x;
     }
     LOOKUP_f.prototype.get = function LOOKUP_f() {
-        var options = {
-        }
-        return options;
+        alert("parameters cannot be modified");
     }
     LOOKUP_f.prototype.set = function LOOKUP_f() {
         this.exprs = this.graphics.exprs;