resizeprofile in rpas

Hi,

I'm trying to understand how resizeprofile works in rpas.

a=resizeprofile(measb, start, fromlength, tolength, dststart: <dststart>, total: <total>)

For the above example

1. data is taken from input measure measb
2. denotes the start index number of calendar hierarchy from which point data will be taken from measb. If start is as data ,respective index number will be evaluated
3. together with start and fromlength will define from start the length of the curve will be taken from measb. If only fromlength is present curve will be taken from measb start calendar dimension index to fromlength(Please correct me)
4. tolength defines output curve length