Formula URL button using Javascript to display the count of records in a Table using API_DoQueryCount

Yes, I changed the urlD and urlE as per my tables and  i inserted the above code into my Formula URL Field. In the Field properties, i have selected "Display as button on forms and reports". Now on the form its is showing as a button but when i click on the button its not working. I mean its not clickable and it is not updating the count value to a field.

My doubt here is that the output of Formula URL button should be a URL link. But here we are inserting Javascript code in the Formula URL which gives the output to be a JS Code instead of URL. I suspect it is the reason that the button is not working.