Using the script task

[Shah, Lokesh]

Hi,
    I am using the script task to extract the name of a file from the path.
 
<project default="doNightlyBuild" name="projname">
.
.
.
 
   <script language="javascript"> <![CDATA[
      file = new java.io.File(projname.getProperty("nightlyLog"));
      projname.setUserProperty("nightlyLogFile", file.getName());
      ]]>
   </script>
 
.
.
 
What if my project name has blank spaces in it e.g.
<project default="doNightlyBuild" name="Project Name">
 
Also , what is the diference between setUserProperty(...) and setProperty(...)?
 
Regards,
Lokesh