InfoPath Dev

1. in de drop down box. The first value they can choose is   value=" " Display="Select..." so that is not working. 2. is I try sum(@field in repeating table(@Other field in repeating table = Drop down box) that's not working to. The formula contains one or more errors: "does not point to a valid lacation ...

Hello, I have a repeating table and a drop down box. The drop down box filters the repeating table. I use a rule condition: "Field in repeating table , is not equal to , field from drop down box" then Hide this control. 1. The filter works great, but if the drop down box is on select I want to see the complete repeating table. 2. ...