range aa = [Book1]1!3; // Dataset 1 Z column in Book1
range bb = [Book2]1!3; // Dataset 2 Z column in Book2
plotxyz iz:=aa plot:=103; // Plot Dataset 1 as Colormap Surface
plotxyz iz:=bb plot:=103 ogl:=[%H]1!; // Add Dataset 2 to active layer

win -cd %H;
newbook template:=test123 sheet:=1;

string path$;

path$ = "Y:\DATA";
findfiles ext:="s*.dat";
impAsc options.Sparklines:=0 options.template:=test123;

@glob=1; // Make local variables global
string iniwks$ = %H; // Remember first workbook
xyz_renka 3 20 20;
worksheet -p 242 temp; // Make one surface plot
%T = %H; // Remember the graph window

doc -e w
{
	if(!(iniwks$==%H)) // Only process workbook not the initial one
	{
		xyz_renka 3 20 20;
		range rr = [%H]1!1; 
		win -a %T;   // Activate plot created earlier
		layer -i rr; // Add dataset to active layer
	}
//worksheet -p 242 temp;
}

@glob=0;

layer.unit = 4;
rescale;