1 files changed, 1 insertions, 1 deletions
diff --git a/js/NonLinear/PRODUCT.js b/js/NonLinear/PRODUCT.js
index f26c8a9c..12d29acb 100644
--- a/js/NonLinear/PRODUCT.js
+++ b/js/NonLinear/PRODUCT.js
@@ -23,7 +23,7 @@ function PRODUCT() {
         return options;
     }
     PRODUCT.prototype.set = function PRODUCT() {
-        this.sgn = parseFloat((arguments[0]["sgn"]))
+        this.sgn = inverse((arguments[0]["sgn"]))
         this.x = arg1;
         graphics = arg1.graphics;
         model = arg1.model;