Change of the width of the Column of tables in PowerPoint from MATLAB using ActiveX

Using ActiveX, I added a table to PowerPoint.

Please tell me the method to change the width of the column that I appointed.

Here is the code I have so far:

PowerPoint = actxserver('PowerPoint.Application'); 
PowerPoint.Visible = 1;
Presentation = PowerPoint.Presentations.Open( fullfile(pwd,'PPT_Template.pptx')) ;   % open File

No=7;   % Add LayoutNo   
t_NewLayout = Presentation.SlideMaster.CustomLayouts.Item(No);  
i_Page = 1; 
t_Slide = Presentation.Slides.AddSlide( i_Page, t_NewLayout );    % add Slide

posX = 200;  
posY = 80;
tableW = 300;
tableH =  400;
table = invoke(t_Slide.Shapes, 'AddTable', 4, 4, posX, posY, tableW, tableH);    % create Table

table.Table.Cell(1,1).Shape.TextFrame.TextRange.Text = 'items';  % add text 
table.Table.Cell(1,2).Shape.TextFrame.TextRange.Text = 'data1';    
table.Table.Cell(1,3).Shape.TextFrame.TextRange.Text = 'data2';    
table.Table.Cell(1,4).Shape.TextFrame.TextRange.Text = 'data3';    

Answer 1

[Satoshi Furukawa]

I got it running with

t_table.Table.Columns.Item(i).Width = 120;

Where Item(i) denotes the ith column.