XQuery with string-join, one parameter is string and other is number -

I want to list the year related to the total number of orders.

  & lt; Samples & gt; & Lt; Sample & gt; & Lt; Year & gt; 2010 & lt; / Year & gt; & Lt; Order & gt; 20000 & lt; / Order & gt; & Lt; / Sample & gt; & Lt; Sample & gt; & Lt; Year & gt; 2011 & lt; / Year & gt; & Lt; Order & gt; 20000 & lt; / Order & gt; & Lt; Order & gt; 35,000 & lt; / Order & gt; & Lt; / Sample & gt; & Lt; Sample & gt; & Lt; Year & gt; 2012 and lt; / Year & gt; & Lt; Order & gt; 20000 & lt; / Order & gt; & Lt; Order & gt; 23,000 & lt; / Order & gt; & Lt; Order & gt; 40000 & lt; / Order & gt; & Lt; / Sample & gt; & Lt; / Samples & gt;   
 I expect output -  
  year order 2010 1 2011 2 2012 3   
 forms of number In  & lt; Order & gt;  element will tell me the number of total orders, I tried it in Bassx with the following -  
  Document ("sample") in $ x / samples / sample return & lt; Li & gt; {String-included (($ x / year, count ($ x / command), "#")} & lt; / Li & gt;   
 But I am getting an error and it is obvious because I am using an integer instead of a string in the  string-join  function. Or is there any other way to get the same output?   
 
 
  string-join  string is expected, this number is not < Code> Count  Add an artist and it will run. 
 In the X $ / sample / sample return 
 {String-join (($ x / year, xs: string (count ($ x) / command))), "#")} & lt; / Li & gt;   
 I have fixed two more errors:  
 
 Why are you questioning the attribute  y  on year? There is no.  
 You can  & lt; Order & gt;  tag,  .   
 Maybe the code can be made more readable by using  concat  (unless you're using only two parameters)?