Dear Rahul,

I can offer such function:

Function MSecToStr(liMSeconds)
local lnSec,lnMin,lnHour,lnOst
lnHour=int(liMseconds/3600000)
lnOst=liMseconds%3600000
lnMin=int(lnOst/60000)
lnSec=(lnOst%60000)/1000
return padl(allt(str(lnHour)),6,' ')+':'+;
padl(allt(str(lnMin)),2,'0')+':'+;
padl(allt(transform(lnSec,'99.999')),6,'0')

Best regars,
Vladimir Trukhin