Numeric and date/time variable values can be formatted using .NET String object formatting rules.
To utilize a format string, specify a format qualifier after the variable name
${VariableName?VariableFormat}
VariableName
Name of numeric or date/time variable
VariableFormat
Format specifier. For valid formats see:
Numeric formats: http://msdn.microsoft.com/en-us/library/427bttx3.aspx
Date/Time formats: http://msdn.microsoft.com/en-us/library/97x6twsz.aspx
Page number is 23. To convert to 4-digit numbers: 0023 use
${page?0000}
To convert current date from, for example, 04/10/2009 to 10-04-2009 use
${comp.$date?dd-MM-yyyy}