Word not recognized=@xxx

[JOHN CLEMENk <jbclem@xxxxxxxxxxxxxx>]

I'm trying to write  this simple plot1
statement...Plot1(Cum(@NVD-@xxx),"CumVol");...but when I verify it I'm
getting "word not recognized" for @NVD.

If I try...Plot1(Cum(data2-data1),"CumVol");...the error message is
"arithmetic(numeric) expression
expected here" and it points to the word "data2".

My Easy Language knowledge is very rudimentary and I could use some help
with this.


Thanks,  John