The 'fillpattern' property

Integer Scalar

Valid for: Series

Normally, bars and pie slices associated with a Series object are filled with a solid block of color. If you wish, you can specify a different fill pattern for the series, by assigning one of the following values to the fillpattern property:

1=Solid, 2=Horizontal grid pattern, 3=Vertical grid pattern, 4=Forward diagonal, 5=Backward diagonal, 6=Cross pattern, 7=Diagonal cross pattern

Note: If the Chart's monochrome property is set to 1, and you haven't specified your own fill pattern, a default pattern from one of the above will automatically be assigned to the Series object to distinguish it from other series on the chart.