How to apply TextFiltering in SDP Variable ?

Summary:

I have a select one component which displays list of Supplier Number. When I type in the number in box , the filtering works fine when I bind the ADP variable to the select one component, but for some reason the filtering in not working when I use SDP variable for the same select one component. I have used Supplier Number as Text filter Attribute for both SDP and ADP variable.

Content (required):

This is ScreenShot of the Select One component with ADPVariable.

When I replace it with SDPVariable ........No filtering.

I am also Attaching the Screen shot of both SDP and ADP variable.