How can I safely replace a query string with an empty string?

[nasekt]

My Goal:Append +test1+test2+test3 to query, then before data reaches the client's web browser replace +test1+test2+test3 with an empty string.

To append string to query, I used this code

static function OnBeforeRequest(oSession: Session) {

if (oSession.uriContains("www.youtube.com/results?search_query="))
{
var str = oSession.fullUrl;
var sAppend = "+test1+test2+test3";
if (!oSession.uriContains(sAppend))
{
oSession.fullUrl = str + sAppend;
}
}

Everything worked fine, but the problem started after I added this code

static function OnBeforeResponse(oSession: Session) {

if (oSession.HostnameIs("www.youtube.com") && oSession.oResponse.headers.ExistsAndContains("Content-Type","text/html")){
oSession.utilDecodeResponse();
oSession.utilReplaceInResponse('+test1+test2+test3','');

Instead of appending to search_query=, it gets appended to &page=

I'm pretty sure oSession.utilReplaceInResponse is responsible for the problem.I really need help.

Thank you.

[nasekt]

Solved it! It was a small mistake on my part.