ShowNegativeBubbles Property [Excel 2003 VBA Language Reference]

True if negative bubbles are shown for the chart group. Valid only for bubble charts. Read/write Boolean.

Example

This example makes negative bubbles visible for chart group one.

Worksheets(1).ChartObjects(1).Chart _
    .ChartGroups(1).ShowNegativeBubbles = True

Applies to | ChartGroup Object