Using Vbscript, i'm fetching a value from textbox from UI. How to save that value to an xml tag -

below code tried save saleblockenddt tag in xml file, i'm fetching ui textbox. when run i've "object variable not set" error.

need solution save tag value

    dim nspos     dim nsparms     dim szenddate     dim sresult     dim senddate      senddate   = trim(getfieldinput("ctxtenddate"))     set nspos = createobject("espace.esnamespace")     set nsparms = nspos.applyxml("pos\pos.xpa", 2)     szenddate = trim(nsparms.parameters.saleblockenddt.text)      if szenddate = ""         nsparms.parameters.saleblockenddt.text = senddate     end if     sresult = nspos.save("pos\pos.xpa",2)