--- a/svghmi/widget_input.ysl2	Tue Dec 29 15:37:41 2020 +0100
+++ b/svghmi/widget_input.ysl2	Tue Dec 29 15:38:31 2020 +0100
@@ -4,7 +4,7 @@
 ||
     class InputWidget extends Widget{
          on_op_click(opstr) {
-             let new_val = this.change_hmi_value(0, opstr);
+             this.change_hmi_value(0, opstr);
          }
          edit_callback(new_val) {
              this.apply_hmi_value(0, new_val);