Urgent - reply fast- Unable 2 find nested user control value

Dear All
 
I am not able to find nested user control values in C#. The value is setting by jquery.
 
given below is the complete scenario :
 
Master Page D - > Content Page A-> User Control B -> Label C -> Label C value which is setting by jquery and when I want to find this value on content Page A the values always showing default value 91.
 
Below is the JQuery Code to set value in User Control B: 
 
function GetSelectedValue(ddlId) {
 
        var objSelectedImage = document.getElementById("SelectedImage");
 
        var imageUrl = $(ddlId).context.innerHTML;
 
        var startIndex = imageUrl.indexOf("src=");
        var endIndex = imageUrl.lastIndexOf('"');
&nb ...