>Hi Erik,
>
>Yes the first thing I did was try to send it as a string and the API Function caused a VFP General Falut and crashed.
>
>There are several function calls that I am using with-in the API. All seem to work except this one which caused VFP General Fault. When using a STRING.
>
>Here is a small portion of the code were I have created a long string containing fields and control character. As required by the vendor.
>
>***********************************************************
>
>Here is the declare statement for the API:
>declare INTEGER compress_ANSI_StringBuildAll IN "C:\TEMP\COMRESS.DLL" String,String
>
>
>This is the input string for the function as you can tell it has control codes embeded and seems to not be the problem.
>
>l_ansistr = "[)>01960277700008400151Z00001014UPSN1235550841/125NSWANSEAMA0520L21L22L23L"
>
>l_maxwork = space(10000) && Define work space for API this is the problem!
>

You might try:

l_maxwork = REPLICATE(CHR(0), 1000)

Beyond that, I'm not sure what the problem could be.