I am trying to plot bivariate of the new columns created but having issue creating another list.

[#1]

dt = Current Data Table();
//declaring variables
alpha_min = 14;
alpha_max = 18;
inc_val = 0.1;

this is the script, but i want to create bivariate plots of each of them without it showing up as multiple pages and also combine the reports to data table. thanks

//defining mu col names
mu_col = "mu";

//loop through alpha range and create new cols//
For( alpha = alpha_min, alpha <= alpha_max, alpha += inc_val, 
//define col name
	mu_col_name = mu_col || Char( alpha );
//compute mu val into formula
	New Column( mu_col_name,
		Numeric,
		Continuous,
		Formula( alpha / (alpha + :X) )
	);
);

[#2]

See if this helps you out

//defining mu col names
mu_col = "mu";

//loop through alpha range and create new cols//
For( alpha = alpha_min, alpha <= alpha_max, alpha += inc_val, 
//define col name
	mu_col_name = mu_col || Char( alpha );
//compute mu val into formula
	Eval(
		Substitute(
				Expr(
					New Column( mu_col_name,
						Numeric,
						Continuous,
						Formula( __alpha__ / (__alpha__ + :X) )
					)
				),
			Expr( __alpha__ ), alpha
		)
	);
);

[#3]

Thanks i ended up figuring it out but i would like to create one page of multiple biv plots so i stored them into a list but instead i get multiple pages of one plots. Im not sure where i went wrong 

dt = Current Data Table();
//declaring variables
alpha_min = 14;
alpha_max = 18;
inc_val = 0.1;
//create list
alpha_range = {};
For( alpha_val = alpha_min, alpha_val <= alpha_max, alpha_val += inc_val,
	Insert Into( alpha_range, alpha_val )
);

//loop through alpha list and create new mu cols
For( i = 1, i <= N Items( alpha_range ), i++,
	alpha_x = alpha_range[i];
	mu_col_name = mu_col || Char( alpha_x );
	dt << New Column( mu_col_name, Numeric, Continuous, Formula( alpha_x / (alpha_x + :X) ) );
	bp = dt << Bivariate( Y( Expr( Column( mu_col_name ) ) ), X( :Temp ) );
);
// use list to
colListY = {alpha_range};
For( j = 1, j <= 10, j++,
	Insert Into( colListY, "mu" || Char( j ) )
);
New Window( "My output",
	H List Box(
		For( j = 1, j <= 10, j++,
			dt << Bivariate(
				Y( Eval( colListY ) ),
				X( Column( dt, "Temp" ) ),
				Fit Line( {Line Color( {212, 73, 88} )} )
			)
		)
	)
);

[#4]

Please use the icon at the top of the edit window when entering JSL.  It make is so much easier to read and interpret.

There are 2 issues that I see.

1. The formula that you are using

   Formula( alpha_x / (alpha_x + :X) )

has a memory variable in it's definition.  Within your JSL, you have that memory variable changing as you move from column to column.  It appears that you are assuming that once you apply the formula to a given column, that the value for alpha_x will be set for the formula and not change.  This is not true.  Whenever the formula is run, it will take the current value of alpha_x and use it.  That is why I specified in my previous response to use a Substitute function to replace the alpha value when the formula is created.

     2. The values in the colListY list are set to mu1, mu2, mu2...etc.  Arn't the Y variable you want to plot named mu14, mu14.1, mu14.2 etc.