<sg:GcSpreadGrid>
<sg:GcSpreadGrid.Columns>
<sg:Column>
<sg:Column.CellType>
<sg:MaskCellType>
<sg:MaskCellType.FieldSet>
<sg:MaskFieldSet>
<sg:MaskLiteralField Text="℡"/>
<sg:MaskPatternField MaxLength="4" MinLength="4" Pattern="\D" PromptChar="_"/>
<sg:MaskLiteralField Text="-"/>
<sg:MaskPatternField MaxLength="2" MinLength="2" Pattern="\D" PromptChar="_"/>
<sg:MaskLiteralField Text="-"/>
<sg:MaskPatternField MaxLength="3" MinLength="3" Pattern="\D" PromptChar="_"/>
</sg:MaskFieldSet>
</sg:MaskCellType.FieldSet>
</sg:MaskCellType>
</sg:Column.CellType>
</sg:Column>
</sg:GcSpreadGrid.Columns>
</sg:GcSpreadGrid>