hello every body
I'm going to run grstest on my data.my data includes 5 portfolio (p1 p2 p3 p4 p5).
but when I eneter the command bellow
''grstest p1 p2 p3 p4 p5 ,flist (market) ret(r)''
, this error becomes
''variable p1 already defined''
what can I do??? please help me