I am using the following code and it works fine

SELECT New_Bills
SCAN  && Scans for New_bills up to EOF()
*Define Variables
	cPsfilepath=ALLTRIM(Myfilepath)
	CREATE CURSOR Billcompress (POS C(254)) && Create Temporary Cursor
	SELECT Billcompress
	APPEND FROM '&cPsFilepath' SDF

However when I use APPEND FROM cPsFilepath SDF, it generates error as file not found.

My Questions.
(1) IS it necessary to have Macro substitue. ?
(2) Where and Why Macro Substutes are used ?
(3) Does use of Macro substitue decreese the processing speed ?

Kinldy Guide