How to zero the data points behind the line of figure?

I have a figure of plot3 and I would like to making the data contacting the blue line to zero.

How to zero the data points behind (contacting) the line..

clear all;clc;close all;

data = ones(100,200);

x = (0:1:size(data,2)-1)*0.1;

y =(0:1:size(data,1)-1)*0.1;

surf(x,y,data*100); hold on;

grid off;

colorbar;

view([0 90])

shading interp;

set(gca,'xlim',[min(x)-2 max(x)+2],'ylim',[min(y)-2 max(y)+2])

x = [2.4;13.9];

y = [-0.5;9.8];

plot3(x,y,1000*ones(length(x),length(y)),'b','LineWidth',10)

Answer 1

[KSSV]

data = ones(100,200);
x = (0:1:size(data,2)-1)*0.1;
y =(0:1:size(data,1)-1)*0.1;

x1 = [2.4;13.9];
y1 = [-0.5;9.8];

p = polyfit(x1,y1,1) ; 

x2 = x ;
y2 = polyval(p,x2) ; 
[X,Y] = meshgrid(x,y) ; 
idx = knnsearch([X(:) Y(:)],[x2' y2']) ; 
data(idx) = 0 ; 


surf(x,y,data*100); hold on;
grid off;
colorbar;
view([0 90])
shading interp;
set(gca,'xlim',[min(x)-2 max(x)+2],'ylim',[min(y)-2 max(y)+2])
% plot3(x1,y1,1000*ones(length(x1),length(y1)),'b','LineWidth',10)

[Smithy]

Thank you very much for your kind answer. I think that the answer is not the case for my question.

I hope to make the "data = ones(100,200);" contated line to zero.

Is there any hints or helps?

[KSSV]

Edited the answer.