Crystal Reports XML and CurrentDate not that easy...like you think

Message

   Hi All,

I'm trying to find solution for creating crystal report using xml files

as example:

<VISITORS>

  <VISITOR_NAME>TOM WANE</VISITOR_NAME> 

  <COMPANY_NAME > COMPANY1<COMPANY_NAME /> 

  <TIME_IN>20/10/2009 11:46:29</TIME_IN> 

  <SITE>OFFICE</SITE> 
</VISITORS>

- <VISITORS>

  <VISITOR_NAME>CHRIS JONES</VISITOR_NAME> 

  <COMPANY_NAME > COMPANY2<COMPANY_NAME /> 

  <TIME_IN>27/10/2009 11:47:23</TIME_IN> 

  <SITE>OFFICE</SITE> 
 </VISITORS>

I want to print visitors only with current date

I'm able to print 

{VISITORS.TIME_IN} <= "CurrentDate"     

or 

{VISITORS.TIME_IN} is any value

but not able to print

{VISITORS.TIME_IN} >= "CurrentDate"  

or

{VISITORS.TIME_IN} = "CurrentDate"   I want this but for some reason is not working report is blank

looks like all those formulas are not compatible with xml...

Could any one help or provide basic idea what to do?

Many Thanks 

tnwirtu