Hello,

assuming this:
"lpLenFront - Length of the file (ASCII) for the front of the check"
means the length of the FILENAME encoded in the first BYTE lpLenFront points to (unusual since this limits you to a maximum of 256 characters for the filename)

LOCAL lcFront, lcFrontLen, lcBack, lcBackLen, lcCode, ;
lcCodeLen, lnJobType, lnRetVal

lcFront = "C:\somefile.bmp" && some image file
lcFrontLen = CHR(LEN(lcFront))
lcBack = "C:\someotherfile.bmp"
lcBackLen = CHR(LEN(lcBack))
the same schema for lcCode & lcCodeLen

DECLARE INTEGER BUICScan IN BUICAPI.DLL ;
INTEGER iJobType, ;
STRING lcCode, ;
STRING lcCodeLen, ;
STRING lcBack, ;
STRING lcBackLen, ;
STRING lcCode, ;
STRING lcCodeLen

lnRetVal = BUICScan(lnJobType,lcCode,lcCodeLen,lcBack,lcBackLen,lcCode,;
lcCodeLen)

Regards
Christian