NonValidXmlCharecters

Question

How to Pass NonValidXmlCharecters in biztalkserver?

Here iam using scripting functiod to pass  NonValidXmlCharecters
In scipting functiod Iam using inline c#:
belo following code i have written
 public String stripNonValidXMLCharacters(String in)
 {
        StringBuilder out = new StringBuilder();
        char current;
        if (in == null || ("".equals(in))) return "";
        for (int i = 0; i < in.length(); i++)
 {
            current = in[i]; 
            if ((current == 0x9) ||
                (current == 0xA) ||
                (current == 0xD) ||
                ((current >= 0x20) && (current <= 0xD7FF)) ||
                ((current >= 0xE000) && (current <= 0xFFFD)) ||
                ((current >= 0x10000) && (current <= 0x10FFFF)))
                out.append(current);
        }
        return out.toString();
    }   
Iam Sending this data as a input :"dsdfjhdskjjdkldskjd",hdjgshsg#*jhj%@&"