ColdFusion ignores typo in for loop statement

I was making a simple XML iteration in script using a for loop, but it only returned one element in stead of all the elements. In a further inspection I discovered a typo which was not reported by ColdFusion.
Here is the for loop:

for (sCount=1; sCount<+arrayLen(xmlSomething["anotherElement"]); sCount++){

}

The problem is the <+ operator which should be <=
But no error report, just the first element that is returned. I wonder why!