Maxdiff error sintaxe

Question

I've programmed a free format Maxdiff question with 2 questions (using the same design), but I need to program the error message when the same Item is selected for best and worst.
I've tried in the Advanced tab:

if (SSI_GetValue("FFMD1_b1")=SSI_GetValue("FFMD1_w1"));
{
    var strErrorMessage = "erro";
}
 
but it doesn't work.
Thank you

Answer 1

The operator to use for checking equality is "==".  The "=" operator is used for other purposes in JavaScript and most other programming languages.

While many lines of code ought to end with a semicolon, there are some exceptions.  Your semicolon at the end of the "strErrorMessage" line is fine, but the one at the end of the "if" line should be removed.

Comments

Thank you very much!