FLINE (fill type) in gdplot2

Hello.

I color filled 850-500mb average OMEG and want to fill in medium-spaced
slanted line for 850-500mb average RELH for values 70% or greater and fill
in thin-spaced slanted line for 850-500mb average RELH for values 90% or
greater.
I can do this, but all average RELH values less than 70% gets plotted as
medium-spaced slanted lines OR a solid color if I put a ";" in front to line
up the fill types to match 70% and 90%...which fills over the average OMEG
color fill.
After reading the FLINE help, I don't see a way to get around this.

Here's what the entries looks like...1st part is OMEG...2nd part is RELH

FINT
-75;-50;-40;-35;-30;-25;-20;-15;-10;-8;-6;-4;-2;0;2;4;6;8;10;15;20;25;30;35;
40;50;75 ! 70;90 FLINE
19;17;13;15;14;7;29;28;24;4;25;26;27;6;21;22;23;20;5;19;17;13;15;14;30;28;29
;7       ! 32;32/;4;7


Thanks in advance...

Brian Koochel