Hi John,
> Thank you. The sample from FAQ works perfectly.
> I am looking through the source code and I have some question about it:
> 1. Why we need to REPLICATE(CHR(0),nnum) for certain variable?

It's simply allocating space for the return value. Without doing to you risk the possibility of the system crashing.

> 2. What is the Integertostring and stringtointeger does actually?

They convert string and integer values appropriately. StringToInteger() returns aan integer value (regardless of the size of the integer). In this case, we're dealing with a 64 bit integer which VFP ddoesn't understand. IntegerToString, converts any integer into string. You have control over the size of it.

> 3. Where could I get information about the memory allocation of structure? I known that there are sample or class in file section but I don't understand it well. Where could I get the more details info?

In higher level languages, simply intializing the variable of what's being returned approporiately works. In a lower level language you have to allocate the memory yourself. A knowledge of C++ is always helpful.
>
>Thank you