possible getFirstBarIndexOfDay bug

[futurenets]

running the attached study on a DELL 5 min chart (starts 1st Feb 2013) and get error "line 32: Parameter Number 2 of Function getValueAbsolute is invalid".

function preMain()
{
setPriceStudy(true);
setShowTitleParameters(false);
setShowCursorLabel(true);
}

function main()
{


if(getBarState() == BARSTATE_NEWBAR)
{
var symb = "SPY";
var intv = getInterval();
var indx = getCurrentBarIndex();
var openraw = getValue("rawtime",indx);
var openindx = getFirstBarIndexOfDay(openraw);
db(openindx);
var ssOpen = getValueAbsolute("Open", openindx, symb + "," + intv);
var ssLast = getValueAbsolute("Close", indx, symb + "," + intv);
}

return null;
}

function db(a,b,c,d,e,f,g,h,i)
{
var str = "[" + String("0"+getMonth()).slice(-2) + "/" + String("0"+getDay()).slice(-2) + " " + String("0"+getHour()).slice(-2) + ":" + String("0"+getMinute()).slice(-2) + "]";
str += ",";
if (a != null) str += a;
str += ",";
if (b != null) str += b;
str += ",";
if (c != null) str += c;
str += ",";
if (d != null) str += d;
str += ",";
if (e != null) str += e;
str += ",";
if (f != null) str += f;
str += ",";
if (g != null) str += g;
str += ",";
if (h != null) str += h;
str += ",";
if (i != null) str += i;
debugPrintln(str);
return;
}