RangeValidator < 0 not working

[Cirene]

Here's my RangeValidator

<asp:RangeValidator ID="RangeValidator1" runat="server"
ControlToValidate="txtSVDV" ErrorMessage="RangeValidator" MaximumValue="0"
MinimumValue="-100" Type="Double">Make it < 0</asp:RangeValidator></td>

My value for txtSVDV is ".015" and the validator is invoking. Any idea why?
I have the type set to Double.

Thanks!

 

[Cirene]

Sorry. I need to set it to Max Value of 1.