[ferret_users] Error Message Using Polymark Script

[Steve Guimond <guimond@xxxxxxxxxxxxx>]

Hello Ferret Clan:
   I read in lon,lat and cloud base heights from a file with data looking
like:

lon      j=1:32671
lat      j=1:32671
cbase    j=1:32671

I then called the polymark script like so:

 GO polymark polygon/key lon lat cbase diamond

and got this error:

 **ERROR: command syntax: PLMdefault_scale*(( )-( ))/
          ( before ) is illegal
DEFINE VARIABLE/QUIET PLMx_correction = PLMdefault_scale*(( )-( ))/
Command file, command group, or REPEAT execution aborted

Anyone know what syntax I am missing or what is going on?  I tried making
the variables comma-delimited, but still does no good.

Thanks.

Steve Guimond
Research Assistant
The Center for Ocean-Atmospheric Prediction Studies
FSU (Tallahassee,FL)