InfoPath Dev

I found solution , here : eval(eval(SharePointListItem_RW[DisplayName = Title], 'concat(" - ", d:Phone Number)'), "..") and this xpath did not Work : eval(eval(Phone Number[DisplayName = Title], 'concat(" - ", d:Phone Number)'), "..")  Double Eval is Trick to get all Value from ...

Hi all I Searched Forum infopathdev and did not find any answer.I have one People Picker Control and 2 Text Box. i set Value's of First Box to eval(eval(Person, 'concat(" - ", pc:DisplayName)'), "..") and it works fine and also i created Sharepoint List with only 2 Column "Title, Phone Number" ...