plot ymin and ymax of the plot

[rizesimoes]

Hi user's

I have problem...

I need to put in scale values of the ymax and ymin.
I'm doing multiplot's and want only ymin and ymax
I'm using of the ytics this way:

__gnuplot_set__ ytics ("0" 0, "1" 1) 

This work for a type of plot ok, but for they other doesn't because of the y 
interval changes. 
May be 0 and 1 or -1 and 1



I can't pass the variable value that I define as parameter to the plot 
My variables are:

ysmax= max(ys)
ysmin= min(ys)

Help me please!

Marize Simoes