使用Jquery和AJAX将参数传递给VB.NET webmethod

I've been searching the internet for hours trying to pass parameters to my code behind using JQUERY $.ajax. I've tried a ton of different things, but nothing has worked. When I don't pass any parameters and set the vb.net function to not receive parameters the functions will get called. But once I try adding parameters, the function never gets called.I've been searching the internet for hours tryi