Add space and style to sliced table - MATLAB Report Generator

I am trying to add some space between the sliced table but I get the error below. In addition, how can I change the table header style?

Error:

Error using mlreportgen.dom.Document/append
Cannot append child that has a parent.

Code:

function ReportButtonPushed(app, event)
            import mlreportgen.dom.*;
            import mlreportgen.report.*
            import mlreportgen.utils.* 
             
            mTable  = MATLABTable(app.dataReport);

            p = Paragraph();
            p.Style = {LineSpacing(1.5)};
  
            slicer = TableSlicer("Table",mTable,"MaxCols",5,"RepeatCols",1);
            totcols = slicer.MaxCols - slicer.RepeatCols;
            slices = slicer.slice(); 
            
            d = Document('slice','pdf');
            d.OutputPath = ['E:/','Sliced'];
            
            for slice=slices
                 append(d,MATLABTable([app.dataReport(:,1) app.dataReport(:,slice.StartCol:slice.EndCol)]));
                 append(d, p);
            end
            
            close(d);
            rptview(d.OutputPath);  
        end

Answer 1

[Sean de Wolski]

You're appending the same paragraph multiple times. It can only be appended once. Clone it first

append(d,clone(p))

[dan kin]

The app.dataReport is a long table (more than one page) and I can not see the distance between the slice tables even when the

p.Style = {LineSpacing(15)};