imacros FAIL_IF_FOUND error

var ret;

for (var i = 1; i <= 500; i++) {


	iimPlay("go.iim");



   // search for the word "YOLO" in source of the page
   
   ret = iimPlay('CODE:SEARCH SOURCE=TXT:"YOLO" IGNORE_CASE=YES');



   // if find the word to play macro1

   if (ret == 1) {   // Text was found
      ret = iimPlay("found.iim");
   }



   // if it's not found, wait and continues loop

   else if (ret != -101) {
      iimPlay("CODE:WAIT SECONDS=1")
   }
 
}