Format date within Tooltip

Hii have a tooltiip which is as follows:[b]="Current Age = " & DateDiff("yyyy",Fields!Dob_dte.Value,Now()) & " : DOB = " & Fields!Dob_dte.Value[/b]EXAMPLE OF Fields!Dob_dte.Value = [i]'1943-05-24 00:00:00.000'[/i]When viewing the tooltip in the report the DOB part shows as [b]MM/DD/YYYY [/b]format. How can i get the Dob_dte.Value to show in the format of [b]DD/MM/YYYY [/b]within the tooltip Thanks in advance