//define start column, e.g. col(2)
int colStart=2;
//define end column, e.g. col(4)
int colEnd=4;
//loop from start column to end column
for(jj=colStart;jj<=colEnd;jj++)
{
//define the end row
int rowEnd=colStart+(jj-colStart)*5;
//loop from row2 to rowEnd
for(ii=2;ii<=rowEnd;ii++)
{
//cell(rowNumber,colNumber)=0
cell(ii,jj)=0;
}
}