WPF Binding Path contains numbers

Hi,

I have a binding path which contains numbers in the name of the path.

This binding is applied on a datagridtextcolumn, below is the xaml:

This Works:

<DataGridTextColumn Header="Computer" Binding="{Binding Computer}" />

This doesn't work:

<DataGridTextColumn Header="Computer" Binding="{Binding Computer80}" />

Should this work ? is there a workaround for this or is this a  known issue.

thanks

exchposh