property FormatAppearance.FontSize as Long
Indicates the size of the font to display the text.

TypeDescription
Long A Long expression that defines the size of the font
By default, the FontSize property is 0, which indicates no effect. The FontSize property can be used to change just the size of the current font, which is applied to the current selection. You can use the Font property to specify a different font to be applied on selected columns/rows.