This property allows you to group several cells on the y-axes in the column heading.

The value of this property specifies how many cells should be merged together on the y-axes starting from the row identified by the Y property in the column identified by the X property.

Only the first of the merged cells can be used by the program.

 

Example - In a grid where the first three rows are column headings, merge rows number 2 and 3 within the first column