Progress not working in Storyline 360

we have upgraded from storykine 2 to storyline 360, but the javascript code we use for tracking is working fine storyline 2 but not working in storyline 360.

Need help!

Here is our code:

var slideName="slide2"; //Change here
var slideNo="2"; //Change here
var totalSlideNo="2"; //Change here
var previousSlide=lmsAPI.GetBookmark();

if(previousSlide.length <1)
{
var txt= slideNo+","+totalSlideNo+","+slideName;
lmsAPI.SetBookmark( txt);
lmsAPI.SetProgressMeasure(slideNo/totalSlideNo);
}
else if(slideNo==totalSlideNo){
var array = previousSlide.split(',');
var index = array.indexOf(slideName) ;
var snoindex = array.indexOf(slideNo) ;
array[0]=totalSlideNo;
array[1]=totalSlideNo;
var prevString=array.toString();
if(index==-1)
{
var txt=prevString+","+slideName;
lmsAPI.SetBookmark( txt);
lmsAPI.SetProgressMeasure(array[0]/totalSlideNo);
}
}
else{
var array = previousSlide.split(',');
var index = array.indexOf(slideName) ;
var snoindex = array.indexOf(slideNo) ;
if(snoindex==-1)
{
var _num=Number(array[0])+1;
array[0]=_num.toString();
}
else
{

}

array[1]=totalSlideNo;
var prevString=array.toString();

if(index==-1)
{
var txt=prevString+","+slideName;
lmsAPI.SetBookmark( txt);
lmsAPI.SetProgressMeasure(array[0]/totalSlideNo);
}

}

 

Thanks in advance