Dynamic XML Load

[#1]

Hi.

I have this table loaded:

XML_Result:

  LOAD string%Table

  FROM [http://.../.../check?company=1&username=Owner&domain=Owner-PC\Owner] (XmlSimple, Table is [string]);

I want to turn this querystring to dynamic - Owner and Owner-PC\Owner to be replaced with OSUser() & QVUser.

how?