Javascript not working in adobe pro

Question

Hello,
  I am trying to use the following if statement:
if(this.getField("Total").value >= 120);{event.value = "Pass"};
Else;{event.value = "Retake"};
Where there is a field called Total that is the sum of many fields. If the total is more than or equal to 120, I want the value in this field to be either the string "Pass" or "Retake"
No matter the value of the Total field, it just say's Pass.
Any ideas on where I am messing up?

Answer 1

Semicolons are a bit funny when mixed with braces {}. Basically a semicolon ends a statement, for instance
x=1; call_routine(1,2);
In an if statement you have
if (something) x=1; else call_routine(1,2);
the semicolons don't belong to the if but to each of the statements. If you tried to write
if (something) x=1 else call_routine(1,2);
though it may look right the problem is that x=1 isn't ended properly. But when you use braces you have a series of statements inside, but you don't end the braces with a semicolon. So
if (something){x=1;call_routine(1,2) }  // wrong, the call_routine(1,2) isn't ended
if (something){x=1;call_routine(1,2); } ;else... // wrong, the ; after } ended the if
The reason you can sometimes get away with extra semicolons is that you can have an empty statement as in
x=1;;y=2; // three statements here, the second is empty